The story
“William Gray, an aged scientist, is found dead in his library. His safe, which was known to have contained a large sum of money, has been rifled, and suspicions point to the scientist’s favorite nephew, Morris Gray, who is found a few minutes later in the library, and who only a few hours before has been disinherited for making love to the uncle’s secretary, Margaret Seymour. The young man, on arrest, has nothing to say for himself. The money is not found, but the police believe that it has been removed at some time previous to the murder, and that the slayer had returned to remove some traces of his crime. Margaret is the only person who contends that he is innocent. At the beginning, too, she had almost believed him guilty, for she had noticed a finger-mark on the side of the safe and had been almost convinced that it was Morris. Later, hiding in the room, she had seen him enter, find her glove and carefully remove it as though he would divert suspicion from herself. She reasoned then that he was not guilty, for in that event he would not have seemed to suspect her. It takes some clever detective work to clear up the case. But Margaret is a born detective, and at last she proves conclusively that the crime was committed by two men who have no connection with Morris Gray.”
Summary from Reel Life · 23 January 1915



