When Lord Telford is found dead. Colonel March discovers that many people had a motive to kill him.
Lord Telford was a dislikeable man. The people only stayed in the mansion with him out of fear or they were coerced.
Colonel March uses mass hypnotism on five people with their agreement. He will play Telford and the others will act around him as if he was still alive.
Colonel March hopes that the real murderer would slip up.
An intriguing concept but it is not pulled off well. Anyone could be the murderer, there is a suspect who is caught but Colonel March thinks someone else is the actual killer.
There was a sense of randomness about the reveal.