It’s a trivial little movie, a London-set comedy-thriller about espionage and code-breakers, with not much in the way of comedy and less in the way of thrills. It’s just classy pulp, but the whole thing goes by before one has time to begin to hate it.

What we are stuck with, then, is a movie that moves confidently in three directions, arriving nowhere with a splendid show of style.

The put-on, of course, consists in never really letting the audience know what level of seriousness the film is at, and the movie itself sometimes seems unsure.

Inventive and amusing, but never really rising above the norm for long.