The Stolen Ruby.

Patrolman Killegren, seated alone in his home, is startled by the sound of shooting. Rushing outside, he meets several officers who inform him that two thieves, attempting to escape, had entered his cottage. Positive that no one had entered the house, Killegren conducts the policemen through the building. The father is startled, upon entering his son Alex's room, to find the boy at home. Knowing that his son could not have been in the room more than five minutes, Killegren is filled with a terrible suspicion.