Jeremy Brandt

The Behavioral Analysis Unit quickly determines that the kidnapper isn't after money -- he's after the victim's twin sister. Now, they must determine how to save the original victim without putting her twin in danger, which becomes even more complicated when it becomes obvious that the kidnapper is somehow always a step ahead of them.

Ryan works an internship for Sandy. Summer and Seth try to impress Brown University. Johnny reveals how he feels about Marissa. Ryan and Marissa tell each other the truth.

The team investigates the mysterious explosion of an ambulance that is supposedly carrying the remains of a Marine killed in a car crash.