[1] As described in a review in a film magazine,[2] while waiting for Jack (McKee), with whom she intends to elope, Barbara (Boardman) is accosted in her bedroom by Phil (Metcalfe), a boarder in her home, who is maddened with jealousy.

She faints and Phil leaves the room in time to be met by the stepfather (Weigel), whom he kills.

Peter gains the confidence of the warden and carries messages between Jack and Barbara.

Barbara lures Phil to their place of hiding, when Peter breaks loose and pursues the villain.

After a long chase Peter finally is able to hold Phil at bay until the authorities arrive, when he confesses to the crime.