Who Done It? (1956)

An ice sweeper with an ice show in London, Hugo Dill is more preoccupied with his dime store detective magazines than he is with his work. In part out of a bumbling circumstance of his own doing, Hugo, despite having no experience or real aptitude in it, becomes a private detective, complete with a blood hound named Fabian.

A series of misunderstandings starting with he taking over office space previously occupied by a talent agent leads not only to a strained relationship between him and Police Detective Inspector Hancock, at least on Hancock's side, but to him stumbling, without he not even knowing, upon a plot for world domination by the behind the Iron Curtain nation of Uralia, namely by being able to control the weather. If Hugo does come to know about the plot, he, without help from Hancock or the police due to that strained relationship, will have not only to save himself and those close to him from the proverbial bad guys, but save the world by thwarting the plot itself. Besides Fabian, the person closest to him is Frankie, a performer with the ice show, she whose general performer specialty, which belies her outward feminine appearance, is something she doesn't like to talk about, let alone divulge to someone she cares about like Hugo who is unaware of that specialty which would be an asset to this case.