Pop singer Danny Pace (Jess Conrad) is hallucinating, seeing his own reflection taunting him in an episode of the BBC television series The Human Jungle (04/06/1963).
His manager Laurie Winters (Annette Carell) calls in psychologist Dr. Robert Corder, protagonist of the series. Dr. Carder was played by Herbert Lom, later better known as Chief Inspector Dreyfus, the Pink Panther movies' straight man foil to Peter Sellers' Inspector Clouseau.
Bizarrely, in the 1963 musical Summer Holiday, in a shot of a newspaper article about other fake singer Barbara Winters, there's another article about Danny Pace, claiming his window smashing at a recording studio was purely accidental. Thank you DVD freeze frame!