Law & Order: Criminal Intent S05E17 - Vacancy

When one of two bridesmaids is found murdered in their hotel bed, Detectives Goren and Eames initially suspect two men that the women met in a bar. But when the survivor, Alice's story keeps changing, evidence suggests an actor -- Tim, posing as a taxi driver might have played a role. The detectives peel back the layers of the suspect's life and discover disturbing evidence, family history -- and his penchant for researching twisted subjects for future acting assignments.