S1, E6: Officer Lewis Powell fell off the wagon and woke up in an alley covered in blood with his off duty weapon missing. Lewis tells Walsh he may have killed someone the night before during an alcohol-induced blackout and asks for his help. While Walsh and Shraeger scramble to put together the pieces of Lewis' missing night, Banks and Delahoy learn they are both victims of identity theft. While investigating the murder of the man pretending to be Leo Banks, Delahoy and Banks peer into the lives of the men who have stolen their identities and consider changing the way they live their lives , on "The Unusuals."