Hardy is trying to piece together the burnt pieces of paper found in the suspect's room. Jo has been asked to try and break the surviving victim's amnesia by hypnosis. The suspect is questioned at length. The case builds up against him.

When violent death strikes down a pretty farm girl, Dr Hardy and Inspector Fleming come up against a wall of stubborn reserve. Persistence at last brings Dr Hardy to a 'not inconsiderable suspicion' of the killer's identity. But proof.