The instrument of death is introduced as Orson Wells takes us through the Black Museum. The mystery rolls the clock back to the year of 1910, and a peaceful afternoon where a man and woman spend the day together.
Edward Jones is playing a dangerous game with the lady’s affections. Jones has a different name, and a wife, and a plan to get rid of her for the insurance money. Orson offers narrative as the drama moves along to end up in murder.
Accidental death sseems to plague the life of Edward, and his new love interest begins showing some similar symptoms of illness that appeared in his past wives. When Scotland Yard gets involved, the trial of Edward Jones explains what tipped off the cops, and brings the case to a close.