Tonight, SERIES PREMIERE, 10 p.m. ET (PBS)
Why You Should Watch: Though he’s best-known for comedy, Monty Python veteran Michael Palin makes a sharp turn into drama in this new three-part suspense tale. He plays a senior citizen who gets himself into an assisted-living program by faking a fall, but ends up in a very real mystery when he witnesses a social worker’s death. Others seem relatively unconcerned, with the exception of a young health-care assistant (Jodie Comer). Mark Addy and Julia Sawalha also star.