The Hot Scots (1948)

The stooges apply for job as 'Yard Men' at Scotland Yard, thinking they'll become detectives, but instead wind up as gardeners. When they learn that detectives are need to guard a Scottish castle where valuables have been disappearing, they masquerades as Scotsmen to get the job. After a spooky night in the castle, the boys expose the servants as the crooks.

Columbia Pictures