A young boy is playing with a cap gun and 'shoots' a man who promptly dies. He runs away thinking he has killed him. He tells Nick what has happened and, when he investigates, the body has disappeared.
Billy is playing cowboys and indians with a cap gun and 'shoots' a man who falls down dead. He then comes face-to-face with what he thinks is the real killer and runs away. He runs into Nick and tells him his story. The killing took place outside an almost burnt out ship and Nick investigates. The body has disappeared and then Billy disappears leaving his sister frantic. The wrecked ship and its cargo are at the centre of the mystery, and Nick investigates.—jem