M.P. Shiel 
Prince Zaleski 

Prince Zaleski, an exiled Russian nobleman, inhabits a half-ruined abbey in Wales, where he spends most of his time smoking cannabis and opium, reading from his library of medieval books, or admiring his collection of rare curios dating from ancient antiquity. His retirement from the world is occasionally interrupted by his friend Shiel, who comes to seek Zaleski’s help in solving mysteries that have baffled the greatest minds in Britain…