Carrie conducts an investigation off the books when Al becomes the prime suspect in the murder of a parolee he helped put away.

Carrie is unable to utilize her perfect memory when an assassin doses her with a deadly poison that attacks her brain, leaving Al on a desperate hunt for the antidote.

When one of Eliot's oldest friends, the campaign manager for a mayoral candidate, is murdered, he is forced to face his past and current demons as Carrie and Al work to uncover the killer.

When Carrie recognizes a murdered city official as someone she played poker with at an underground casino, she puts her career on the line by admitting her illegal activities and volunteers to go back to the tables undercover.

Carrie and Al dig into the secrets of students and faculty at an elite prep school when a high-powered CEO and father of one of the students is murdered.

When Homeland Security takes over a bombing investigation from Major Crimes, Carrie doubts their conclusion that it's tied to terrorism and secretly continues her own investigation. Meanwhile, Webster makes friends with Murray's daughter.

Carrie and Al investigate the murder of a high-end matchmaking service employee, but each secret they uncover in the victim's life only serves to create a new possible suspect and motive.

Carrie and Al delve into the disturbing - and dangerous - world of celebrity obsession when a television star is found murdered in his dressing room.

Carrie and Al assist the Secret Service with a murder investigation that has ties to a counterfeiting ring run by an assassin.

Carrie and Al must find the connection between a murdered coast guard officer, a celebrity chef who threw him out of his restaurant and a missing block of C-4 before the explosives are used.

Carrie and Al investigate when a championship boxer appears to have been beaten to death without making an effort to defend himself.

Carrie and Al's investigation into the death of a college dropout takes a surprising turn when they discover he had been living in an off-the-grid community on an abandoned island near Manhattan.

After releasing a salacious story about the director of the NSA, a reporter is murdered; Agent Simms comes back to help Carrie; Al reconnects with an ex who might be able to assist with the case.