Lisa Kaminir

In the midst of preparing for his next victim, Dexter is thrust into turmoil when the other serial killer, dubbed the Ice Truck Killer, privately informs him that he knows Dexter's morbid secret.

Alex treats a patient whose religious beliefs place her life in jeopardy. Meredith wants to know more about Derek, and Izzie ponders contacting her estranged mother.

A hacker tries to interfere with the presidential election, causing chaos for Team Scorpion as they try to sort out the mess.

Danny receives a chilling message from a possible serial killer; Erin considers applying for a judgeship; mayoral candidate Katherine Tucker believes Frank is secretly investigating her husband.

Morgan's visit with the survivor of an unusual stabbing spree in upstate New York leads to more questions about the case.

Jane and Lisbon secretly reopen a solved case to prove that a military colonel murdered his wife.