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Lois H. Gresh

A series of grisly murders rocks London. At each location, only a jumble of bones remains of the deceased, along with a bizarre sphere covered in strange symbols. The son of the latest victim seeks the help of Sherlock Holmes and his former partner, Dr. John Watson. They discover the common thread tying together the murders. Bizarre geometries, based on ancient schematics, enable otherworldly creatures to enter our dimension, seeking to wreak havoc and destruction. The persons responsible are gaining so much power that even Holmes's greatest enemy fears them - to the point that he seeks an unholy alliance.

Titan Books

Sherlock Holmes vs. Cthulhu

Sherlock Holmes vs. Cthulhu The Adventure of the Deadly Dimensions

The third novel in six-time New York Times best-selling author Lois H. Gresh's Sherlock Holmes vs. Cthulhu series.
Both Fitzgerald and Moriarty travel to Innsmouth, the stronghold of the cult of the Old Ones. Holmes and Watson follow them across the ocean and discover a structure designed to enable the Old Ones to flood into our world and unleash horrors that--unless stopped--will annihilate all of humanity. Yet when it is destroyed people continue to mutate and go mad. Cthulhu rises over Devil Reef, ready to unleash his minions. In an epic battle--logic vs. brawn--Holmes must defeat Cthulhu and permanently seal the deadly dimensions.

Hard Case Crime

Sherlock Holmes vs. Cthulhu: The Adventure of the Innsmouth Mutations