Archive and reconstruction recounting the last 24 hours of a celebrity's life. America's raucous, acid-tongued queen of comedy was known for her love of cosmetic surgery, but it was during a routine, low-risk procedure that Joan Rivers eventually met her fate. Talking to her doctors and those who knew her, forensic physician Dr Jason Payne-James examines the last days of this much respected, larger-than-life personality in an effort to establish why she died.