The Gorilla (1939)

Lionel Atwill is the wealthy "Walter Stephens" whose life has been threatened by the sinister "Gorilla". To thwart this, he engages the services of the "Defective Detectives" (Jimmy, Harry & Al Ritz) and what ensues is a slapstick horror movie with a man in a gorilla suit (or, could it be an actual ape?) and some pretty corny set piece comedy sketches strung together around Atwill and a rather under-used Bela Lugosi ("Peters"). Much of the plot is just gibberish, but the detectives have a good time, and that brings a limited amount of charm as they haplessly go about their deducing - and it isn't horrible to watch, but it's pretty cringe-making at times and 80 years after it was made is nigh on unwatchable for anything other than a kindly nod to pre-war comic cinema.