I Take This Oath is a 1940 American crime drama film directed by Sam Newfield under the pseudonym of Sherman Scott.

Hanagan's son Steve (Gordon Jones) decides to avenge his father, and at the suggestion of his girlfriend Betty Casey (Joyce Compton), he joins the police force.

Under the instruction of Daniel Casey (Guy Usher), Betty's father, Steve begins learning how to be an officer.

However, as he has become so dedicated to finding his father's murderer, he begins to fall behind in his law studies, and due to his poor grades, he is dismissed from the force.

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