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

The third novel in six-times 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.

“'delightful' - Barnes & Noble SFF BlogI "f you're in the mood for excitement, thrills, and over-the-top battles with extraterrestrial creatures, the Sherlock Holmes Vs. Cthulhu series will cause you to scream for more!" - George Kelley”

‘delightful’ - Barnes & Noble SFF BlogI

"f you’re in the mood for excitement, thrills, and over-the-top battles with extraterrestrial creatures, the Sherlock Holmes Vs. Cthulhu series will cause you to scream for more!" - George Kelley

LOIS H. GRESH is the New York Times Bestselling Author of 28 books and more than 65 short stories, as well as the editor of anthologies Innsmouth Nightmares and Dark Fusions. She is a well-known Lovecraftian writer whose works have appeared in Black Wings of Cthulhu, The Madness of Cthulhu, and many other anthologies. Her work has been published in 22 languages. Visit her at

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