The 'All the world's a stage and every one of us is giving a performance' theme might be somewhat hoary, but Hitchcock delivers a reliably solid elaboration of it here, replete with the colourful supporting turns, sly humour and atmospherics that one would expect.
Alfred Hitchcock returned to London for this loosely plotted comedy-thriller set in the theatres of the west end. Apparently he made it so he could visit his daughter Patricia at RADA. She makes her screen debut in a small role. And we get proper Hollywood stars and a wonderful British support cast.
It kicks off with Richard Todd telling Jane Wyman he had to clear up after Marlene Dietrich killed her (Marlene's) husband. This is shown in flashback, though it's revealed to be a lie. It's hard to understand the kerfuffle this caused; there were unreliable narrators long before Stage Fright.
The real joy is that gallery of character actors, particularly Alastair Sim and Kay Walsh who steal the film. Todd does well in a civilian role. Michael Wilding performs his usual Cary Grant impression as the detective with an eye for Wyman, as well as the killer.
Hitch always makes much out of a kiss, and the long prelude to Wilding and Wyman's clinch is a classic touch. The big weakness is Wyman's pallid performance. A touch of screwball from her would have brightened the occasional longueur. It's a bit short on thrills, but the cast makes it worthwhile.