The BAU travels to Boston when the serial killer from one of Agent Hotchner's first cases, which involved one of the most notorious murderers in the history of New England, returns after 10 years.
A covert identity created for one of Gibbs' undercover cases 20 years ago resurfaces after a murder victim is found living under the alias.
When the 1958 suicide of a celebrated Philadelphia disc jockey is discovered to have actually been a murder, Rush and the team must find the truth of this public persona's private life by decoding a message hidden in his final broadcast.
When an escape artist is found dead in a wooden trunk, Rosewood and Villa must unravel a case packed with illusions and deception. Meanwhile, Hornstock’s days with the East Miami PD may be numbered and Rosewood gets to know Adrian to make sure he is the right guy for Villa.
While investigating the murder of man hired to make dirty bombs that terrorists intend to set off in Miami, Horatio finds the bloody fingerprint of his brother, Raymond, who he believed to be dead.
