As described in a review in a contemporary film magazine:
Young authoress Ruth Winton (Mason) finally succeeds in getting book publisher Murdock (von Meter) to read her manuscript for a new mystery novel titled The Great Diamond Mystery and he agrees to publish it, claiming it is for her sake as the company's committee has turned it down. Perry Standish (Collier), her sweetheart, takes her to meet his wealthy uncle who is so enraged he cuts him off. Mailison (McCullough), the partner in a diamond enterprise with Graves, gives Perry a job and soon after a diamond is missing and Perry is accused. He goes to Graves and, soon after, Graves is killed. Perry is arrested. Ruth is concerned as aspects of the crime are similar to her novel. Believing the murder will return to the scene of the crime, which is a claim of her novel, Ruth rents Grave’s house. The old butler asks for his job and is hired. Mailison returns and resumes his courtship of Ruth. He keeps hunting around the mantels, finally knocking over a clock in which Graves has hidden diamonds. The butler rushes in, there is a shot, and the butler falls. He confesses that he killed Graves for the diamonds. Perry, who is about to be executed for the crime, is pardoned by the governor in the nick of time and finds happiness with Ruth.[2]
