Crime on Their Hands (1948)

"The Stooges are furniture upholsterers seeking to be reporters. They investigate a diamond theft and end up solving the case."

The Stooges are janitors working in a newspaper office. When an anonymous caller phones in a tip about the theft of a famous diamond, the boys decide to become reporters and go after the crooks. They find the crooks, but Shemp accidentally swallows the diamond which was hidden in a bowl of candy. The crooks want to cut the diamond out, but the boys foil them with the help of a friendly gorilla.