Alec Baker, a world-renowned professor of behavioral science, lends his expertise to an array of high-stakes cases involving governments, law enforcement and corporations with his unique and unexpected approach to understanding human behavior.

Alec agrees to testify as an expert witness in a wrongful death trial for a friend of Kylie’s. As he faces an old nemesis, he discovers competing emotions around an accidental shooting. Marisa reaches a decision about the bombing investigation.

The shocking murder of Lin & Megan Russell and the media frenzy surrounding Kent police's year-long hunt for a suspect.

A tattoo puts the team in danger when a deadly disease is released inside the FBI.

A blast from Rich DotCom's past sends the FBI team after a deadly terrorist plot.

Eight family members are executed in one night as detectives must unearth the hidden motive to track down the killers. While the community mourns, investigators analyze bloody footprints to determine which path leads to the truth.

A breakdown in the dispatch system makes a difficult job even harder for the cops. Lydia reaches out to her old flame and Cooper gets a new partner.

A tattoo puts the team in danger when a deadly disease is released inside the FBI.

A blast from Rich DotCom's past sends the FBI team after a deadly terrorist plot.

Forced to cease operations while under investigation by Internal Affairs, Intelligence goes off-book to bring down Reid once and for all. Ruzek and Burgess consider delaying their nuptials amid the uncertainty.

When a Brooklyn prosecutor is found slain in her apartment, Maroun takes drastic action to convince an eyewitness to come forward. Riley struggles to adjust to the new lieutenant in charge.

Eight family members are executed in one night as detectives must unearth the hidden motive to track down the killers. While the community mourns, investigators analyze bloody footprints to determine which path leads to the truth.

A breakdown in the dispatch system makes a difficult job even harder for the cops. Lydia reaches out to her old flame and Cooper gets a new partner.

A tattoo puts the team in danger when a deadly disease is released inside the FBI.

A blast from Rich DotCom's past sends the FBI team after a deadly terrorist plot.

Forced to cease operations while under investigation by Internal Affairs, Intelligence goes off-book to bring down Reid once and for all. Ruzek and Burgess consider delaying their nuptials amid the uncertainty.

When a Brooklyn prosecutor is found slain in her apartment, Maroun takes drastic action to convince an eyewitness to come forward. Riley struggles to adjust to the new lieutenant in charge.

As investigators zero in on the Wagners, the family starts to feel the heat and begin undercutting each other. A message from Hanna Rhoden reveals a shocking possible motive for the murders.

The team is drawn into dangerous political intrigue when a tattoo points to someone from Weitz's past.

Remi's schemes put her and Weller in danger, while Patterson and Rich solve a mysterious puzzle at the FBI.

When the founder of an AI-infused dating app is murdered, Detectives Shaw and Riley delve into who would want the love-obsessed man dead; Captain Olivia Benson surprises ADAs Price and Maroun when she becomes a witness for the defense.

Riley's personal and professional lives clash when his brother is connected to a murder investigation; Price takes a chance on a witness who can testify to a hidden motive.

Watched by the world, the Metropolitan Police follow the radioactive trail of Polonium across London in search of Litvinenko's killers.

John and Lucero settle into their new friendship during a day filled with strange calls. While Ben and Sammy respond to an insane bank robbery call.

When the founder of an AI-infused dating app is murdered, Detectives Shaw and Riley delve into who would want the love-obsessed man dead; Captain Olivia Benson surprises ADAs Price and Maroun when she becomes a witness for the defense.