Tom Sawyer, Detective is a 1938 American mystery comedy film directed by Louis King, written by Robert Yost, Lewis R. Foster and Stuart Anthony, and starring Billy Cook, Donald O'Connor, Porter Hall, Phil Warren, Janet Waldo, Elisabeth Risdon and William Haade.

Unsuccessful lawyer Jeff Rutledge wants to marry Sally and Silas' daughter, Ruth, but wealthy Brace Dunlap also has eyes for her.

At the start of the following summer, Aunt Sally calls Tom and Huck back to help with the farm since Uncle Silas is in frail health.

Aboard the steamship to Arkansas, Tom and Huck are approached by two men claiming to be detectives who ask for their help in finding out about a passenger.

At first, Tom and Huck think the man in question is Jupiter Dunlap, the lazy oaf who was supposed to be working on Aunt Sally and Uncle Silas' farm.

Jake is carrying two diamonds worth $20,000 inside the hollow heel of his boot and he is certain the "detectives" are actually a pair of thieves trying to rob and kill him.

At Tom's request, Sheriff Slocum removes the steel plate from the bottom of the boot Peters is wearing and the pair of diamonds are revealed.

Jeff tells the judge Brace and Jupiter should be tried for killing and burying Jake Dunlap and trying to frame Uncle Silas for the murder.