American insurance man has to find a stolen Da Vinci painting when the original is replaced with a forgery at the Tate Museum.

Quite passable B-movie, certainly nothing original and full of plot holes, but affable and amusing. Benefits from location shooting at the actual Tate and a canny use of Mussorgsky's "Pictures at an Exhibition."

Note: The US version runs about 11 minutes shorter, so the scenes with Philip Ray playing a tramp were obviously deleted.