AllMovie

The Man in the Mirror is Edward Everett Horton, making one of his periodic professional visits to England. Horton plays Jeremy Dilke, a meek, mild-mannered businessman who allows everyone to use him for a doormat. While looking into his mirror, Dilke is confronted by his brusque, assertive alter ego, who declares "I am the man you have always longed to be." Armed with his newfound confidence, Dilke becomes a go-getting dynamo -- much to the delight of heroine Helen (Genevieve Tobin), who knew he had it in him all along. Moon-faced Alastair Sim plays a wonderful cameo as a foreign interpreter.