A bank holdup leads the team to a safe deposit box, the contents of which have the potential to destroy national security; Kristen is eager to get back into field work while other team members still have their concerns.

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

When the team is called to the scene of a murder, they quickly suspect political motivation, but when another murder occurs, they work to uncover a common thread before more bodies pile up. Also, Maggie contemplates a decision that could affect her entire career.

When a truck driver is murdered and the drug he was transporting goes missing, the team hunts for those behind the remaining batch that is already wreaking havoc on the streets of New York.