Little Maurice Dumont lives with his mother in a village in the mountains. His twin brother Jacques died at birth. But Maurice told that he could speak with Jacques. The doctor, Dr. Prevost and her husband, who teaches at the local school, are of the opinion that his mother's strict upbringing is not good for Maurice. One day, they discover strange injuries on him. At the same time some women of the village plan to use Maurice's ability to communicate with the dead to contact their dead relatives. But this is not a good idea ...

For years, a blackmailer has been preying on the weaknesses of others throughout London. When Holmes hears of the utter misery this mystery man is creating, he adopts a campaign to thwart his evil scheming. The campaign astonishes Dr. Watson by its strangeness and finds Holmes falling in love.

Sherlock Holmes uses his abilities to take on cases by private clients and those that the Scotland Yard are unable to solve, along with his friend Dr. Watson.