Movie Description
Wives Under Suspicion (1938) is a film directed by James Whale, starring Warren William, Gail Patrick, Ralph Morgan, and Constance Moore, and released by Universal Pictures. In 1966, the film entered the public domain (in the USA) due to the Universal Pictures failure to renew its copyright registration in the 28th year after publication.
A district attorney (William) realizes that his own wife (Patrick) might be having an affair while he is prosecuting a cuckolded murderer.
(Summary from Wikipedia)
Copyright Info: This movie is in the public domain and is legally available for free on YouTube.