The Adventure of the Doctor and the Duellist

Shortly after Sherlock Holmes’s unexpected return from the dead, Dr Evangeline Persano brings a case before the great detective. Her husband, Isadora Persano, a well-known journalist and incorrigible duellist, has gone mad: the only clue was the matchbox in his hand which contained a remarkable worm unknown to science. But Holmes suspects there is more to the journalist than meets the eye, an affair rather queer which ultimately renders the case something for which the world is not yet prepared. Now, with the vaults of Cox and Co. unlocked and the tin dispatch box opened, The Adventure of the Doctor and the Duellist illuminates a critical turning point in the nature of the intimate friendship of Watson and Holmes.