S1·E5 The Girlfriend Experience

Longworth gets a nightmarish call from Daniel that Carlos has been found dead. Longworth is speechless and horrified at the site of his face-down dead body, but not as horrified as the real Carlos who is alive and p* off. Thanks to his daughter's internet shopping addiction, he was the victim of identity fraud by the murder victim. Longworth tracks the victim to the fake-Carlos' girlfriend who is a social anthropology doctoral student who has many research subjects who are emotionally attached to her. Longworth tracks down each of her subjects in his quest to find the real killer.