Peter Lorre is Mr. Moto in "Mr. Moto Takes a Vacation" from 1939. Moto is in Egypt helping with the security of a precious crown, that of the Queen of Sheba. He accompanies the crown on board ship, and he's undercover until Archie Featherstone (G. P. Huntley) announces his true identity for all to hear.
Once on terra firma, Moto's work becomes more difficult as it seems some people are not what they seem. And Moto isn't sure the famous crook Metaxa is really dead - in fact, he thinks he's hovering around. Moto plans on drawing him out.
Fairly easy to figure out, but I won't say why.
Some good character actors, including Joseph Schildkraut and Lionel Atwill, appearing with Virginia Field.
As a side note, the lovely Ms. Field could perhaps have reached major stardom had she knocked Darryl Zanuck on a head with a decanter when he made a pass at her. She was also very outspoken, which didn't help her either.
As we all know, #metoo was always very prevalent in Hollywood. According to many actresses, if you didn't "cooperate" you didn't get big parts. The starlet Rita Gam, an astonishingly beautiful woman, refused to go to Hollywood until someone offered her a $1250 a week contract. Why? Those who made $750 a week and under were part of the "visiting firemen" brigade. Sad but true.