Harry Dickson - Vol. 1 - Mysterion

Famous investigator Harry Dickson is just back in London after some well-
deserved holidays, and already Scotland Yard are seeking his help again, for
there are very strange events afoot. A famous heiress and writer, Delphina
Cruikshank, has vanished from a locked house. The corpse of an executed
murderer has disappeared … while the doctor who was autopsying him was
murdered. And Mysterion, Miss Cruikshank's new character, may not be entirely
fictional!