Despite occasionally amusing passages this engaging spoof of the nascent spy genre is, however, perhaps not memorable enough to be more than an agreeable time passer.
Still, the cast is willing: for most of the film's second half, Dirk Bogarde - playing an unwilling British spy - is forced to sport several ingenious impersonations (waiter, milkman, a typically Bavarian villager, etc.) to evade the pursuing Russian agent Leo McKern. Robert Morley is McKern's British counterpart (but posing as a diplomat) and John Le Mesurier (playing one of Her Majesties' top secret agents) appears in the film's very first (and arguably best) sequence: stopping at what seems to be a reception desk, he proceeds to place on it every kind of gadget one could think of before proclaiming that one of their best agents had been killed and, soon enough, a card showing "007 Deceased" appears on the screen!
Sylva Koscina, playing McKern's Ninotchka-like daughter (who also poses as Bogarde's chauffeur) adds the requisite element of sex appeal to the mix when she becomes enamored with her "boss". Another funny sequence takes place when Bogarde is asked to try out an indestructible glass fabric (the work of a German inventor) by throwing a large rock at it; sure enough, the rock bounces onto the floor when it hits, but as they start walking away, the sound of shattering glass is heard on the soundtrack which prompts the Russian factory owner to hiss "You Nazi swine" to the dumb-founded inventor!