The psychiatrist, Dr. Cross, is treating a young woman, Janet Stewart, who is in a coma state. This was brought on when she heard loud arguing, went to her window and saw a man strike his wife with a candlestick and kill her. As she comes out of her shock, she recognizes Dr. Cross as the killer. He takes her to his sanitarium and urged by his nurse / lover, Elaine Jordan, gives Janice an overdose of insulin. But he can't bring himself to murder her in cold blood and asks Elaine to get the medicine to save her. She refuses, they argue, and he strangles her. He saves Janet's life but now faces two murder charges.
