The Clue of the Missing Ape [1953] [DVD]

Naval cadet Roy Savage pulls a pilot out of a crashed airplane and is rewarded with a trip to Gibraltar. There he hooks up with Nati Banda and the two of them tangle with a comically inept band of saboteurs; among their plots, they are trying to poison the Rock's Barbary Apes, since everyone knows that when the apes leave, so will the British.

Director James Hill gives us plenty of location shooting on Gibraltar, lots of flag-waving action by the British navy in action and doesn't stint us on activity by Miss Banda, who is not in the film simply to tag along along. It's highly enjoyable kiddy fare.