 Pelley goes inside and discovers a body, as well as a ring, on the floor but the three killers, who are still in the house, decide to simply knock him out once they realise he is blind and cannot identify them.When Pelley comes round the police investigate his story but cannot locate the house or body, so after he regains his eyesight after the operation he decides to try to solve the mystery.He returns to the house to find Patricia Dale living there with her father and from a photo on the piano he realises that the ring belongs to her brother, Norman, who is presumed dead after a plane crash a year before.