The Cthulhu Casebooks Books in Order

Back from Afghanistan in 1880, Watson meets Holmes as apparently healthy Shadwell residents die of starvation. Their investigation follows sinister shadows through London, confronting a drug lord and forces that challenge any ordinary explanation of the deaths.

A scarred Bedlam inmate speaks an unknown language and remembers little of his past. Holmes and Watson trace him to a disastrous Miskatonic expedition, whose attempt to capture a monstrous creature has consequences reaching into London.

As members of the Diogenes Club die in apparent suicides, Holmes and Watson confront their longstanding enemy once more. Missing women near their Sussex retreat draw them toward an undersea menace and the culmination of a supernatural conspiracy.

Eve Allerthorpe must prove her sanity to inherit her family’s fortune on her twenty-first birthday. Haunted by her mother’s ghost and a terrifying Christmas figure called Black Thurrick, she turns to Holmes and Watson for help.

Holmes and Watson investigate three winter mysteries across Kent, London, and Surrey. A drowned schoolboy, a wealthy man apparently frightened to death, and a mutilated woodland corpse each suggest supernatural causes that Holmes sets out to examine.

An aging Watson records the hidden supernatural history behind his published accounts of Sherlock Holmes. Investigations involving reanimated bodies, strange machines, and northern horrors lead the pair toward the Mi-Go and their plans for Earth.