Francisco Viana

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.

Castle's agent, Paula Haas, approaches him with a career changing opportunity which would signal end of his relationship with Beckett.

When a government witness is murdered, the FBI hires The Lightman Group to determine who leaked the witness' whereabouts to the killers and to protect Agent Reynolds, the star witness in the case. When Reynolds refuses to testify in the case, Lightman and Foster learn he is hiding something in his past.

Dexter becomes more intrigued by Hannah, while Debra gets to know local crime writer Sal Price, who has dug up some possibly incriminating dirt on Hannah. Quinn gets made an offer he tries to refuse, while Batista is drawn to a new business opportunity. And try as Debra might, she can't stop LaGuerta from upending the Bay Harbor Butcher case...

While trying to uncover why Louis was killed on his boat, Dexter must out-maneuver Isaak, who's after Dexter - and Debra. New leads are brought to light on the Wayne Randall killing spree case by his alluring former accomplice, Hannah McKay, who Dexter discovers has a secret.