The Man with My Face

Set in Puerto Rico, where Charles "Chick" Graham settled down after the war to run a small business with his old Army buddy, now his brother-in-law, Buster Cox, Graham comes home one evening to find his wife, Cora, acting as if he is an insane stranger. He finds that a double has taken his place. There is a man who looks exactly like him, Albert "Bert" Rand, playing cards and drinking in his living room. Cora and Buster, and even Graham's dog, do not recognize him and think the double is him... (Wikipedia)