Christopher Grove

The serial killer resurfaces after 20 years of silence and contacts the Behavioral Analysis Unit with the promise that he will kill another victim in the next five days. As the team springs into action, Gideon enlists the help of a former colleague who worked the case when it was fresh to help find the killer.

As Alison's trial begins, the once-confident Queen Bee is no longer certain of her fate as testimony reveals not only her lies, but the lies of those close to her. Meanwhile, Spencer, Aria, Emily and Caleb search for information to clear the imprisoned Hanna, following a string of clues that might have been left by Mona, or possibly planted by "A."

Alison's trial is coming to a close and the outcome looks even more bleak when the prosecution calls a surprise witness. Desperate to find any evidence or witness to save their friends, Aria, Emily and Spencer race to find someone or something that can prove Ali's innocence and put an end to this nightmare.

In the series finale, one last battle between Raylan, Boyd and Ava will determine who—if anyone—gets out of Harlan alive.

Emily confronts former friends and a lifelong enemy in a desperate search for Victoria, while the fallen Queen of the Hamptons finds herself at the mercy of her own darkest secret.