'Shock Theater' Story Code '66428' by Deborah Pratt

3rd October 1954: Sam leaps into the body of Sam Bederman, a manic-depressive patient at the Havenwell Mental Institution, just as he is given unprescribed electro-shock therapy by a sadistic orderly. After Sam is returned to his hospital ward, Al arrives on the scene and is dismayed to find that his friend now believes himself to be Samantha Stormer, a secretary from Detroit, in 1961. Realising that Sam is re-experiencing the persona of someone he once leaped into, Al tries to talk him back into his real identity; however, his efforts only succeed in convincing Doctor Masters that not only does his patient have multiple personality disorder, but he is also hearing voices. After discovering that all the other mental patients can see him, Al returns to the Quantum Leap base to seek help from his team; they quickly determine that Sam’s mission is to save Tibby, a patient with mild Down Syndrome doomed to spend the rest of his life on the streets after his release. Returning to the hospital, Al finds that Sam has now become aged negro Jesse Tyler; with horror Al realises that if his friend continues to slip into more of his previous personas he will lose all contact with Al – and be lost in time forever…

Scott Bakula (Doctor Samuel ‘Sam’ Beckett), Dean Stockwell (Rear Admiral Albert ‘Al’ Calavicci), David Proval (Doctor Masters), Lee Garlington (Nurse Chatam), Scott Lawrence (Tibby), Bruce A. Young (Butcher), Nick Brooks (Freddy), Robert Symonds (Doctor Wickless), Ralph Marrero (Oswald), Candy Ann Brown (Doctor Verbeena Beaks), Frank Collison (Mortimer), Kevin Page (Young Doctor), Harry Pugh (Older Doctor), Howard Matthew Johnson (Jesse Tyler / Mirror), Brad Silverman (Jimmy LaMotta / Mirror), LaReine Chabut (Samantha Stormer / Mirror), Jean-Pierre Dorleac (Mental Patient)*
*(Uncredited)

Directed by Joe Napolitano
Executive Producer Donald P. Bellisario

TX (US): 22nd May 1991

Notes:
*Featuring Doctor Samuel ‘Sam’ Beckett and Rear Admiral Albert ‘Al’ Calavicci