An elite team of FBI profilers analyze the country's most twisted criminal minds, anticipating their next moves before they strike again. The Behavioral Analysis Unit's most experienced agent is David Rossi, a founding member of the BAU who returns to help the team solve new cases.

In the gritty world of the NYPD, no one's tougher than Detective Robert Ironside. He and his trusted, handpicked team of specialists will do whatever it takes to solve New York's most difficult and notorious crimes - even if it means breaking the rules. As a detective, his instincts are second to none, and those around him have to stay on their toes if they want to keep up...because when his spine was shattered by a bullet two years ago, Ironside swore he'd never let a damn wheelchair slow him down.

Based on the Pretty Little Liars series of young adult novels by Sara Shepard, the series follows the lives of four girls — Spencer, Hanna, Aria, and Emily — whose clique falls apart after the disappearance of their queen bee, Alison. One year later, they begin receiving messages from someone using the name "A" who threatens to expose their secrets — including long-hidden ones they thought only Alison knew.