Law & Order: Special Victims Unit S11E19 - Conned

Detectives Olivia Benson and Eliot Stabler are called to a crime scene where the body of a young man has been found in a hotel storage room. Initially, it is assumed that the young man was a wedding crasher, but security tapes indicate that he was with the bride's godfather. However, when the presumed victim turns up alive, Benson and Stabler must determine the true identity of the victim and find the murderer.