"Flat Line" -- Dyan and Julian go undercover in a hospital when they suspect an "angel of death" is killing people with non-life threatening ailments. Also, Lizzie asks Andy for his legal expertise when a personal trainer sues her for accidentally injuring him, on INSTINCT, Sunday, April 29 (8:00-9:00, ET/PT) on the CBS Television Network. Pictured (L-R) Alan Cumming as Dr. Dylan Reinhart and Bojana Novakovic as Det. Lizzie Needham Photo: Best Possible Screen Grab/CBS ÃÂ©2017 CBS BROADCASTING INC. ALL RIGHTS RESERVED. | Episode 1.06 - Flat Line | Promotional Episode Photos | Season 1 | Instinct | Gallery