After a truck filled with armor-piercing rifles is hijacked, the team works to discover who stole it, and what they have planned for the stolen weapons; a friend from OA's past returns to help with the case, but OA isn't sure he can trust him.

After the police ignore a desperate father's plea for help, he abducts a billionaire's daughter and holds her hostage in a safe room until his own missing child is returned to him; Jubal puts his hostage negotiation skills to the test.

When the team is called to the scene of a murder, it quickly suspects political motivation; Maggie contemplates a decision that could affect her entire career.

Morris receives an unwanted package from his father; Sam is anxious to get Alex (Dominic Janes) off the ventilator; a woman in the midst of a high-risk pregnancy may be deported.

Morris tries to help a girl who was hit while riding her bike; Gates can't get over his feelings for Sam; Neela is flustered when Dr. Brenner returns from Australia.

Neela has a recurring dream; Gates tries to save a patient who jumped out of a window while sleeping; Neela is surprised to see Dr. Corday (Alex Kingston).

Morris tries to help a girl who was hit while riding her bike; Gates can't get over his feelings for Sam; Neela is flustered when Dr. Brenner returns from Australia.

Morris and Gates treat an older man who was assaulted on the street; Sam gets a surprise visit from her sister; Dr. Morgenstern (William H. Macy) visits County General when he discovers an old mentor is ill.

A car accident in the ambulance bay severely injures a mother; an insurance company frustrates Morris; Neela tells Brenner about her offer in North Carolina.

The BAU takes charge of a hostage situation at a law firm where Matt Simmons' wife works.

The BAU is called upon when bioterrorism is suspected in a series of mysterious deaths; Garcia visits her stepbrother to take care of a difficult family issue.

The BAU is called to Taos, N.M., when someone targets victims' temporal lobes.

The team questions the credibility of a former FBI agent's bizarre account.

When Reid and Garcia are abducted by a mass murderer, it's up to the rest of the team to find them; the BAU looks to their past to solve why the two heroes have been targeted.

The team tracks a serial killer when remains of numerous victims are found in the walls of an elderly couple's home; the hunt becomes urgent after the BAU learns the killer's specific ritual of when to strike; Rossi reconnects with his ex-wife.

Packages with gruesome contents are delivered to six people in the Washington, D.C.. area; Simmons and Kristy struggle to connect with their son, David, who is suspended from school for aggressive behavior.

Soon after the BAU steps in to help local law enforcement isolate a suspect for a murder, a second person who is related to the first victim is killed under similar circumstances; Prentiss is concerned about Garcia's behavior.

The team investigates the copycat murder of an unsolved case from 150 years ago that spawned a legendary ghost story; Gregorio is spooked when the case is connected to a recent séance and a local medium.

Sebastian is placed on administrative leave after being questioned by the FBI about a foot chase; Pride and the team attempt to clear Sebastian's name.

The murder of a petty officer leads the team to a woman who is targeting men with high security clearance; Lasalle's father arrives to discuss the family business.

The team investigates after a clinical trial in which brain implants are put into veterans is hacked; Patton must work alongside his ex-wife, who spearheads the project.

Jess LaCroix and his team come to help OA find a fugitive LaCroix arrested years ago after a bus with 26 students goes missing and he's the main suspect.

The team investigates a drug deal gone bad after the body of a college student is found; Detective Hailey Upton temporarily joins the team and finds her investigative methods clash with the Bureau's more buttoned-up environment.

The team welcomes a new member, Special Agent Tiffany Wallace, as they search for killers who orchestrated a mass shooting at a media company; OA's personal connection with the case threatens to cloud his judgement.

The team races to stop an active serial killer after three women are found weighted down at the bottom of a lake; Jubal looks into an old closed case after there are multiple similarities to the recent victims.

When the leader of a drug cartel and one of the world's most wanted men is apprehended by the team, the entire FBI headquarters is put at risk when his henchmen unveil a plot to free him; Isobel must make a difficult decision.

A shooting at a quinceañera leaves two dead, but the team believes they may not have been the intended targets; Maggie is conflicted as the team decides the best plan of action for using a witness to take down their suspect.

The team searches for a young girl who was kidnapped from a cabin during a family vacation; Maggie questions her relationship with Nestor when she learns he hasn't been completely honest with her.

Banfield is determined to have a baby; Neela gives a girl good news about her mother's surgery; Dr. Carter makes a surprise visit to the ER.

Dr. Banfield and her husband consider adopting; Dr. Carter tries to jump back into working at County but struggles with new procedures and technology; Sam's mother (Amy Madigan) comes into the ER.

The staff at County General is interviewed for a documentary on emergency medicine; Morris' girlfriend is rushed to the ER with gunshot wounds; Sam tries to make amends with her mother (Amy Madigan).

Neela and Sam are stunned when they return to the airport with transplant organs, only to find their plane left without them; Dr. Carter (Noah Wyle) gets a surprise visit from an old friend (Eriq La Salle) while waiting for his kidney transplant.

Neela and Dr. Dubenko argue about the treatment of two surgical cases; Brenner has an epiphany about his past.

Several of the ER doctors and nurses help out at a camp for kids who have had open heart surgery; a woman comes back for the child she abandoned in the ER.

The BAU investigates a spooky local ghost story of the "Tall Man" and the clues it provides when two people go missing in the woods; a third person mysteriously surfaces the following day with limited details as to what happened to her friends.

The BAU investigates four murders along the eastern seaboard; the crimes become personal for Alvez when the team discovers there are ties to his time spent in pursuit of a notorious hit man; Alvez and his girlfriend decide to move in together.

The BAU races to capture the vigilantes behind a series of attacks taking place every 27 minutes in the nation's capital; Prentiss and Unit Chief Andrew Mendoza lead the effort to identify the vigilantes and what's motivating them.

The BAU investigates a double homicide and kidnapping in New Hampshire; Rossi's plans to elevate his relationship with Krystall don't go as planned.

A professor from Lewis' past tips off the BAU to an alarming number of overdose deaths of patients who just completed rehab.

Prentiss faces her past when the BAU is sent to investigate the murders of prominent businessmen, all of whom are missing their hearts; Prentiss plans a romantic first date with Mendoza, but the evening is cut short by an urgent call from Rossi.

The BAU team heads to Portland, Ore., to investigate a chilling abduction that may be linked to a local couple who were killed in their home a week earlier.

The BAU team flies to Iowa to investigate the disappearance of three 10-year-old children who appear to have been abducted from their homes, with surveillance video from a park as their only lead to finding the children's whereabouts.

Wade's son asks Pride for help after being attacked and discovering his girlfriend is missing; Pride must meet with a therapist to discuss his process for solving cases.

Pride starts to doubt evidence suggesting homeless kids murdered a petty officer.

Rita Deveraux tells Pride that Douglas Hamilton is about to make a deal to get out of prison; Pride and the team re-investigate the Clearwater case in hopes of spoiling his plans.

After a deadly armed robbery and high-speed chase is linked to an undercover ATF operation, Percy reconnects with her former ATF partner.

The team must infiltrate a drug trafficking gang after the robbery of a chemical plant leaves two customs agents dead; Nestor offers his help on the case, giving Maggie new insight into his character.

The team hunts a killer who is fatally shooting seemingly unrelated targets; new agent Tiffany Wallace experiences tension between her work as an FBI agent and the responsibility she feels to her community as a Black woman.

After a bomb leaves three people dead, the team presses a reluctant informant to gather information from his close friends who are under suspicion; OA and his girlfriend clash over where the informant's rights lie.

When a reporter is kidnapped and held without a ransom demand, the team must dig into her past relationships in order to pin down her assailant's motive; Isobel's relationship comes under fire when the case makes a connection to her boyfriend.

The team must track down two assailants who wear animal masks while committing armed robberies; Tiffany and Scola butt heads on whether or not to accept the local NYPD's offer to help in the investigation.

After a man is killed by an explosive package shipped to his home, the team attempts to capture the sender and intercept his latest deadly parcel; Maggie struggles to trust her younger sister.

Gates treats a young teen with alcohol poisoning; old friends come to show their support when Dr. Carter opens a medical facility for the underprivileged; Sam gets a special birthday gift.

Young doctors face life and death daily in the emergency room of a major hospital.

An elderly man insists on keeping his dying wife on life support against her wishes; an attractive patient and an outbreak of food poisoning bedevil Carter.

A confused patient (Rosemary Clooney) wanders the hospital, singing; Ross prescribes a spinal tap for an 18-month-old boy, alarming the father.

Rossi questions his actions in the aftermath of a struggle with a serial killer who appears to have outsmarted the BAU.

The BAU investigates a string of murders taking place in supposedly haunted houses in Lewiston, Maine.

Rossi prepares to marry Krystall; the team investigates a series of fatal shootings following car accidents.

The BAU team investigates an unsub with striking similarities to Rossi's latest obsession, "The Chameleon.".

The team searches for Everett Lynch and his daughter; Spencer has a meaningful visit with his mother.

The BAU team investigates a series of seemingly random fatal explosions throughout Kentucky and Tennessee.

The members of the BAU enjoy a Saturday off in vastly different ways; Rossi and Prentiss help Simmons assemble a new crib; Garcia leads a hacking competition; Dr. Reid strikes up a conversation with a woman named Maxine.

Following a series of fatal shootings, the BAU team travels to Illinois to investigate what appears to be a copycat serial killer.

Sebastian's high school friend asks for help when her business partner is killed at a gaming convention; FBI Special Agent Raymond Isler believes Adrian is the hacker that the Cyber Crimes division has been tracking for years.

A petty officer's murder leads the team to a night club where Pride's mother used to perform; Lasalle must return home to Alabama after receiving an unexpected call from his family.

A petty officer is murdered while in town to help a refugee family; Wade works on the special election campaign for Mayor Zahra Taylor that takes place during Mardi Gras.

FBI Special Agent Raymond Isler asks Pride for help with an off-the-books opioids theft investigation he is personally invested in; Percy works under cover as a getaway driver, with Isler as the muscle for a job tied to the case.

The team rushes to track down two doctors abducted by a desperate father willing to do anything to save his son; Jubal's uncertainty in his family life affects his judgement during the hostage situation.

When the CEO of a major brokerage firm is killed while surrounded by protesters, the team looks into who had the most to lose from his company's perceived manipulations; Scola's previous Wall Street career and the reasons he left come to light.

While investigating a mass casualty incident at a New York City restaurant, the team scrambles to determine if it was racially motivated and if there was more than one gunman; Maggie starts to notice troubling behavior from her co-worker Elise.

When five prominent men are gunned down at a trendy New York restaurant, the team's investigation brings them into contact with a lieutenant in Antonio Vargas' cartel, triggering a showdown between Isobel and Vargas.

After a young woman is killed on her way home from a lavish yacht party, the team investigates who she was and how she came to be at the event.

Maggie, OA and the team must stop a hacker who is disabling life-saving equipment in several New York City hospitals; Jubal's son waits for important surgery at one of the impacted hospitals.

A woman says she killed her teenage son out of fear that he would follow in his criminal father's footsteps.

A murder victim, a young banking associate, has hundreds of thousands of dollars in a checking account, which may be a clue to the case.

Detectives believe vengeance is the motive for the shooting of a private military contractor, found dead in his hotel room.

A bank executive must assist in a robbery in order to save his kidnapped daughter.

A diner shooting leads detectives Fontana and Green to a desperate gunman seeking revenge for the death of his baby sister of AIDS at a children's hospital.

A newspaper reveals the identity of an undercover police officer, resulting in her murder, so Detectives Green and Fontana search for the source of the leak.

Detective Falco finds slashed to death in his bathroom the young woman he took home the night before.

McCoy risks his career when he uses a corrupt DEA agent (Ritchie Coster) to lure psychopathic killers out of hiding.

Tabloid photography may have played a role in a fatal burglary-attempt; ADAs Jack McCoy and Consuela Rubirosa argue the use of shield laws to protect celebrity journalism.

An Internet photo of a murdered woman provokes a slew of 911 calls.

An 8-year-old girl dies in the explosion of an Upper East Side brownstone; detectives determine faulty wiring is to blame, but with little evidence it is difficult to prove the case.

A young Middle Eastern man dies in an apparent hate-crime, but the suspect hires a high-powered lawyer who tries to have the case thrown out.

A man (A.J. Handegard) dies after being identified on a newsmagazine program that had been luring suspected pedophiles by having staff members pose as young girls.

An executive of a body armor company is gunned down while arriving at his daughter's $2 million sweet-16 party; detectives tie the incident to a U.S. soldier killed in Iraq when his vest failed.

Mobsters and lawyers (Susan Sarandon, Tommy Lee Jones) hound a boy who knows about the missing corpse of a U.S. senator.

A law-school grad uncovers a sinister secret about the Tennessee firm that made him an offer he couldn't refuse.

A Washington reporter (Denzel Washington) helps an on-the-run law student (Julia Roberts) who knows too much about a government cover-up.

Ross takes under his wing the son of a schizophrenic patient; a married heart-attack patient arrives handcuffed to his girlfriend.

A patient (Alan Rosenberg) will not last the night without a heart transplant; Ross admonishes a woman for not buying her daughter asthma medicine.

A pizza-delivery man crashes through the hospital's doors; a deadbeat sister (Kathleen Wilhoite) wants to stay with Lewis.

Nurse Hathaway tells Dr. Ross of her future domestic plans; Dr. Benton realizes something important about his fellowship rival; Dr. Lewis has a surprise birthday party.

Ross tries to maintain order at the emergency room on Greene's day off; a rape victim is afraid to cooperate with police.

An injured teen confesses to Hathaway that he was responsible for two deaths in a car accident but denies it when police arrive.

A Washington reporter (Denzel Washington) helps an on-the-run law student (Julia Roberts) who knows too much about a government cover-up.

A law-school grad uncovers a sinister secret about the Tennessee firm that made him an offer he couldn't refuse.

Mobsters and lawyers (Susan Sarandon, Tommy Lee Jones) hound a boy who knows about the missing corpse of a U.S. senator.

A congressional aide disappears after a hit man saves her from two men posing as NCIS agents; LaSalle struggles with life-altering decisions regarding his brother's future.

The team investigates the murder of a Navy captain who was searching for a priceless 200-year-old fleur-de-lis during the annual Louisiana Pirate Festival.

Pride, Sebastian and Tammy travel to South America after Pride is personally requested by a former colleague to assist with a classified operation that has been compromised.

Percy and Lasalle go under cover at a high-stakes poker game after the organizer targets players with access to a naval research laboratory; Laurel Pride visits her dad during spring break to discuss options after her upcoming graduation.

Pride and his bar patrons are held hostage by a group of volatile thieves.

Gregorio calls on her former behavioral science professor when the team's latest case matches one she studied during FBI training.

A journalist posts a scathing article documenting Pride's "reckless use of justice"; the team is concerned about the fallout from the piece and the confidential information revealed; Rita Devereaux tells Pride it is a coordinated attack on him.

When Walter finally learns Cabe's secret about the Baghdad mission, the future of the team is threatened; Ralph puts his life in jeopardy to help the team.

When Walter's car ends up at the edge of a cliff, the fractured team must come together for their most important mission yet.

When a nuclear powered Russian satellite is knocked out of orbit, the new Director of Homeland Security reunites the team; Paige and Walter confront their feelings.

When a woman from Cabe's past asks for help apprehending a war criminal, the members of Team Scorpion travel to Cuba.

Sylvester goes under cover in a federal prison in hope of saving three judges' lives; the team must orchestrate a prison break when Sylvester's life is threatened.

An explosion sends a top-secret submarine to the bottom of the ocean with limited oxygen, a self-destruct function that's about to activate, and Walter, Cabe and Happy on board.

The members of the team go under cover on a movie set in Kazakhstan in hopes of disabling a Soviet-era nuclear missile being sold by terrorists.

A nefarious virus is uploaded to Walter's computer, turning the team's new "smart" building project into a death trap with people locked inside.

A nefarious virus is uploaded to Walter's computer, turning the team's new "smart" building project into a death trap with people locked inside.

The team must intervene when Paige and Ralph are on a sabotaged, runaway subway train; Toby tries to impress Happy during his first boxing match.

The members of Team Scorpion take a lucrative job locating a top-secret aircraft in Area 51 for the CIA.

Team Scorpion is blackmailed into breaking into the United Nations to help with the assassination of an arms dealer; Sylvester tries to protect Megan's wishes.

After a father and daughter get kidnapped, a former foe of the BAU returns with very specific demands for Dr. Reid.

When the BAU team travels to Denver to investigate several murders, Prentiss is forced to evaluate her relationship with Special Agent Andrew Mendoza.

Prentiss and J.J. are faced with important decisions to make about their futures as the BAU travels to Texas to investigate a series of murdered businessmen.

Rossi develops some new theories about Everett Lynch, aka The Chameleon; the team sets out on an epic hunt to capture Lynch.

While hallucinating after he gets a brain injury, Dr. Reid is visited by ghosts from his past; the BAU makes a shocking discovery about Lynch that affects Rossi personally; the team comes together to celebrate Rossi's retirement.

The BAU interviews candidates to take the opening left by Kate's departure; the team tracks a serial killer who leaves behind evidence that indicates a person intent on revenge.

The team must find the person responsible for a sarin gas attack on a Los Angeles bus before a larger incident occurs.

The team suspects a jilted unknown subject is responsible when brides are murdered on the eve of their nuptials.

Pride assembles an off-the-books team to search for a loophole when he faces a grand jury indictment for abuse of power.

Pride's teams uncover a sinister plot during the New Orleans Tricentennial Fleet Week celebration.

While Pride fights for his life in the ICU, the team scours the city for the hit woman who attempted to assassinate him.

The team searches for a former Irish Republican Army bomb maker who was smuggled into the city; they are joined by agent Hannah Khoury, Pride's replacement during his medical leave; Pride considers a new position within the agency.

The team investigates the murder of a Navy intelligence officer killed during a conference for foreign diplomats; Pride has some trouble adjusting to his new position at the agency.

An investigation into the murder of a petty officer reveals a conspiracy in a tight-knit local fishing community; Lasalle awaits the final results of the tax fraud investigation into his family's company.

Pride's father, Cassius Pride, is wrapped up in an NCIS case involving a notorious unsolved casino heist; Pride meets a family member he never knew existed.

Traffic police pull over a drunken, bloodstained celebrity (Chevy Chase), whose racism becomes apparent after his arrest.

Chris Drake finds his friend dead on a party bus, making him an instant suspect; as investigators dig deeper into the case, more of the story comes to light, leading to an unlikely conviction.

When a convicted mass murderer escapes from prison, detectives rush to apprehend him, but not before he murders two more people.

An attorney involved in a high-profile wire tapping case is found dead.

The son of a model and tabloid queen (Mariel Hemingway) dies of a brain tumor caused by bone replacement in his legs.

The adopted infant of a soap opera star and a relative of the baby's biological father are central to a murder investigation.

Someone in a crowd fires a gun, killing a student, during a question-and-answer session of a controversial speaker (Charlotte Ross).

When a gay actor is found dead, evidence points to a popular pastor (Anson Mount) known for speaking out against homosexuality.

When an actress is found hanging in her office, detectives quickly discover that she suffered a blow to the head prior to the hanging.

A high-profile publisher is found dead after putting out a controversial book.

Green and Cassady suspect arson in a string of church fires, but the discovery of a body in the ruins shifts the focus of the investigation to homicide.

Detectives determine to find out whether a rapper's murder was a random act or connected to her work.

The death of a Russian emigre (Michael Aronov) seems to be an act of terrorism until the medical examiner finds traces of a specific drug in the victim's body.

Detectives suspect a former sexual predator of killing young boys.

The world panics as doctors race to find a cure for a rapidly spreading virus that kills those contaminated within days.

An Army doctor (Dustin Hoffman) fights the spread of a deadly virus brought into the United States by an African monkey.

The world panics as doctors race to find a cure for a rapidly spreading virus that kills those contaminated within days.

The team finds a connection between bombings and a private veterans' club in New York City; Isobel tells a reluctant OA to recruit a former Army buddy for intel.

The team hunts for a serial killer who is targeting young, homeless men; Tiffany and Scola don't see eye to eye on how to handle the case.

A multiple-car accident floods the emergency room with patients; a patient (Malgoscha Gebel) believed to be mentally impaired surprises the doctors.

A nearly drowned boy pre-empts Greene's Christmas shopping; Madame X (Rosemary Clooney) switches to holiday fare.

Carter is allowed to observe surgery; Lewis learns Chloe is leaving; Ross teaches a teen mother how to nurse her baby.

Greene's criticism shakes Lewis' confidence; a man considers removing his brain-damaged son from life support.

Lewis goes before the review board when a hostile attending doctor holds her responsible for a patient's death.

Morgenstern (William H. Macy) offers Greene a prized position on the hospital's staff; a terminally ill patient (Linda Kelsey) begs Greene to end her pain.

When a robbery-homicide leaves three restaurant employees dead, a cold case that occurred in the same town six years earlier could yield a lead.

A notorious street artist becomes a suspect when corpses are used in macabre graffiti art in Detroit; Dr. Lewis tries to balance work and her relationship with her fiance.

A murder in a Florida community of sex offenders results in a large number of possible suspects; a career opportunity could take Lewis away from the BAU.

Rossi's daughter, a journalist, investigates the disappearance of a college student; JJ comes back from maternity leave.

An unknown subject in Phoenix abducts people and deprives them of sleep; Garcia and Hotch deal with a threat from hit men.

The BAU works with the NSA when two undercover DEA agents are murdered and another goes missing; Hotch hopes the team's work with the NSA will bring them closer to finding a ring of hit men.

The members of the BAU team track an unknown subject who appears to be fascinated with medical experimentation.

Reid plays a central role in the BAU's elaborate plan to take down a ring of hit men known as the Dirty Dozen.

After Pride's assistant escapes from a kidnapper, the team uncovers evidence of a suspect who is harvesting organs from multiple victims; Pride turns to a friend for guidance as he struggles with the ramifications of his recent brush with death.

Following a deadly car explosion in the French Quarter, the team interrogates a professor and former member of a student protest organization; Tammy discovers a secret about Hannah's personal life.

The team places Mateo Diaz, a high school gang member turned informant, in protective custody while they investigate the murder of his junior reserve officers' training corps instructor; Pride needs his brother's help to gain Mateo's trust.

The team investigates the murder of a Navy contractor who secretly lived two lives for decades.

After a suburban woman is kidnapped from her home, the team looks into trysts on both sides of a seemingly perfect marriage; OA feels pressure from Mona to make changes in his career path.

The team must track down a shooter targeting detectives from the same precinct and unit while facing mounting tension from the NYPD; Tiffany finds that her NYPD roots may be influencing her view of the situation.

After a young girl is kidnapped from her daycare, the team must help her parents navigate a debt owed to the deadly gang in their neighborhood; Maggie struggles to focus on the case when her sister returns from rehab.

A widow is shocked that her new "boyfriend" is the manipulative leader of a terrorist group planning an attack; Scola is reminded of his brother's death on 9/11; Tiffany worries about his emotional choices during the investigation.

After Rina is critically wounded while heading to work with Jubal; the team makes the chilling discovery that a vengeful Vargas orchestrated the shooting from behind bars and continues to target the rest of their team and their loved ones.

As the team investigates a string of jewelry store robberies that culminate in a double murder, they uncover a connection to a 16-year-old boy trying to survive the foster care system.

The team searches for an abducted college coed; Jubal has a tense encounter with Rina's mother.

A woman (Meg Foster) abandons her recently adopted, AIDS-stricken daughter at the emergency room; a cop brings in a dog he hit with his car.

Believing it's Dr. Benton's birthday, Dr. Carter plans a surprise party for him; Dr. Ross frees a child trapped in a stuffed tiger's jaws.

After 48 hours of duty, Benton won't go home; Hathaway's plans to adopt a Russian girl are threatened when her past is investigated.

Complications threaten the lives of a woman and her unborn child; Ross has a date; a teen is poisoned by insecticides.

A full moon brings in unusual cases; Benton confronts his mother's condition; Ross and Greene are called in to meet the new chief.

Dr. Greene fears a contagious patient may flee; competitive Deb Chen goes too far; Dr. Lewis treats an armed woman.

When corpses are discovered in public places in Boston, a ride-sharing service may lead the team to the killer.

The BAU looks for a suspect and a motive when victims are found in truck stop restrooms in the South.

An 18-year-old woman escapes from the home where she and two other women were held captive for years.

The BAU team combs Los Angeles for a suspect after security footage is discovered, which shows an unknown subject being invited into victims' homes.

When Morgan is abducted, the members of the BAU team race against time to find him and save his life.

The team searches for an unknown subject who takes children while their parents are asleep; Morgan tries to find out who attacked him.

When an unsub targets the BAU, the team pursues the person who is responsible for the actions.

Emily looks to the BAU for help when tracking an international serial killer; the BAU deals with Morgan's departure.

Honoring names in music with live performances, awards and pop culture moments.

Honoring names in music with live performances, awards and pop culture moments.

Maggie goes under cover working in a bar to investigate an anti-government group that regularly gathers there; a single father on the periphery of the group begins to fear he's in danger of becoming collateral damage.

When a Muslim college student and his younger brother are murdered, the team connects with the outraged imam of OA's former mosque, who insists the victims were wrongly targeted as terrorists.

The team investigates an extremist gun group after an anti-gun lobbyist building is bombed; SAC Bashar dangles a possible promotion for OA.

The team realize they have a cross-country serial killer on their hands; the case has ties to Isobel's father, Robert, and his hotel, leading to revelations about their fractured relationship.

Benton dazzles the staff; Lewis suspects a doctor/patient is not what he seems; Ross agrees to coach Jake's Little League team; Greene goes to Milwaukee.

Greene and the new chairman (Michael Ironside) clash over an attempted suicide; Greene feels he is losing his wife.

Dr. Lewis' mother (Valerie Perrine) drops by the hospital to see her and Chloe (Kathleen Wilhoite); Ross treats eight children with digestive trouble.

Hathaway and Taglieri's wedding day arrives; Greene gets good news and bad; Carter works his last day of ER rotation; Benton treats an AIDS patient.

Staff members adjust to new jobs; cash-starved Ross works overtime; Hathaway confronts an alcoholic father; gunshot victim goes into premature labor.

Lewis clashes with the new chief resident; Ross treats a child pyromaniac; Hathaway rides ambulance duty with a handsome paramedic.

The BAU hunts for an UnSUB who deliberately disfigures victims; Rossi and his ex-wife have an uncomfortable reunion.

The BAU plays a dangerous cat and mouse game with a convicted serial killer who may have information on the whereabouts of two kidnapped boys.

Hotch is arrested by a SWAT team and suspected of conspiracy; when the team members scramble to prove Hotch's innocence, they discover a larger plot may be on the horizon.

New recruit Luke Alvez helps the team capture a killer who escaped from prison with 12 other convicts.

J.J. is shaken after investigating the case of two abducted children, and tells her husband about the events.

As the BAU welcomes back Emily Prentiss, they're called upon to investigate the disappearance of three women.

The team searches for a serial killer along the Appalachian Trail in rural Virginia.

The BAU investigates the case of two murdered families, where two high school students are the sole survivors.