Agent Colby Granger lands in prison after the discovery that he was a mole within the FBI, but he escapes, and it's up to Don and his team to track him down and uncover the truth.
A series of secrets and blackmail involving a young, up and coming actor are exposed when Don and his team investigate the murder of a young woman in his Hollywood Hills mansion.
A typical morning at a coffee shop turns into a nightmare, when a car collides into it, leaving one person dead and many injured. But when the team starts to investigate they realize it wasn't just an accidental loss of control. Meanwhile, Colby tries to figure out if he's still welcome on the team.
After recognizing numerological patterns in the Bible verses that the killer leaves behind, Don and his team are able to track the killer's movements, but are one step behind when a gripping twist brings the chase to an end.
A bank for the rich and powerful is robbed, but the stolen contents of the safety deposit boxes are being liquidated and donated to charities and it's up to Don and Charlie to uncover the true motivation behind the humanitarian thief. Meanwhile, Charlie is upset when Amita doesn't want him to meet her parents because she thinks her father will be upset that Charlie isn't Indian.
Don feels responsible for the death of a participant in the Witness Protection Program after she is gunned down in her home.
Don and the team investigate the secret world of alternate-reality games after a man plunges to his death while participating in one such game. Amita's life is in danger when her hidden gaming ability becomes the key to tracking down the killer.
When a mega-heiress is abducted by an extremist group looking to punish her industrialist father, Don and the team rush to find her captors, but they soon learn that she engineered the whole thing to make her father pay. The case brings up issues Megan has with her father and she and Larry become closer. Meanwhile, Don and Liz continue to have problems.
Charlie works to find an extremely rare comic that was stolen during a deadly robbery at a comic book convention.
Don and the team come under pressure when a former FBI subcontractor shoots an agent inside the FBI headquarters and takes David hostage in an elevator, leaving them with a severely restricted plan of action.
Charlie becomes the target of physical intimidation aimed at disrupting his work on the case of a missing investigative journalist.
Don and his team work to track down a serial rapist who is using his position as a police officer to lure his victims. Meanwhile, Amita and Larry stay with Charlie and Alan and Larry asks Amita to work with him on his new research project.
Don and the team take down an inner-city meth lab, but it is Don's FBI instinct that leads to the arrest of a bystander who is discovered to have a greater scheme in the works.
Don's old flame Robin Brooks returns to California to prosecute an incarcerated criminal, but when three witnesses involved in the case are murdered, Don and his team realize that the next victim may be Robin and must work to keep her safe.
The team searches for a motive after the family members of Clay Porter, Jr., a fugitive on the run for murder, are taken hostage by a gang of military thieves.
A mass poisoning at a cult compound leads the FBI team into a maze of old grudges and a complex murder plot.
Don and Charlie find themselves in conflict over their differing beliefs as they investigate a case involving national security. Meanwhile, Megan faces a crisis of conscience and leaves the team.