An entertainer (Yolande Donlan) mistakes the rehearsal of a mystery play for the real thing. Michael Rennie. Sutherland: Valentine Dyall. Sue: Hy Hazell. Robin: Arthur Hill. Night Watchman: Jon Pertwee. Mild. Directed by Val Guest.
Suspicious comedy singer wrongly interprets cameras accidentally televising a rehearsal as a secret plot to murder one of the actors. An early inside glimpse of the television world, but a paranoid no-brainer.