
An elite squad of FBI profilers analyzes the country's most-twisted criminal minds, anticipating the perpetrators' next moves before they can strike again. Each member of the "mind hunter" team brings his or her expertise to pinpoint predators' motivations and identify emotional triggers to stop them. The core group includes an official profiler who is highly skilled at getting into the minds of criminals, a quirky genius, the former media liaison who manages to adeptly balance family life and the job, and a computer wizard.

The BAU investigates a series of disfiguring acid attacks on young men and women; Dr. Reid begins to settle into his new surroundings.

The team pursues two young lovers on a killing spree; Prentiss receives frightening news.

A mother steps forward with valuable information for the BAU to aid in their investigation of an unsub known as the bone crusher; Reid must adapt to a new set of rules in prison.

The team investigates unusual murders in Los Angeles, and more information about Prentiss' past arises.