The Adventure of the Frankenstein Monster (2006)

Here's an irresistible pairing for Halloween. Sherlock Holmes investigates the monster of Frankenstein. It's alive!

Victor Frankenstein creates life from the dead, alone, in his Geneva laboratory. His friend, Clerval, becomes concerned for Victor's health when he is suddenly missing and travels to London, England, to consult 'privately' with his old schoolmate Dr. John Watson. Hearing a strange lie about events told to Watson, Sherlock Holmes takes it upon himself to delve into the strange particulars of the matter. Holmes, Watson and Frankenstein embark on a fantastic journey across the frozen wastelands of icy terror and helplessly observe as all around them meet their most gruesome death at the hands of the Frankenstein Monster.

Title: The Adventure of the Frankenstein Monster

Author: Don W. Baranowski

Year: 2006

Publisher: Infinity Publishing

Purchase: Amazon.com | Amazon.co.uk

The Strange Case of the Alchemist's Daughter (2017)

A fresh take on mixing Sherlock Holmes and classic monsters, favorably reviewed by the respected blog Sherlock Peoria. Likely the first of a series.

Based on some of literature's horror and science fiction classics, this is the story of a remarkable group of women who come together to solve the mystery of a series of gruesome murders and the bigger mystery of their own origins. 

Mary Jekyll, alone and penniless following her parents' death, is curious about the secrets of her father's mysterious past. One clue in particular hints that Edward Hyde, her father's former friend and a murderer, may be nearby and there is a reward for information leading to his capture...a reward that would solve all of her immediate financial woes. 

But her hunt leads her to Hyde's daughter, Diana, a feral child left to be raised by nuns. With the assistance of Sherlock Holmes and Dr. Watson, Mary continues her search for the elusive Hyde and soon befriends more women, all of whom have been created through terrifying experimentation: Beatrice Rappaccini, Catherin Moreau, and Justine Frankenstein. 

When their investigations lead them to the discovery of a secret society of immoral and power-crazed scientists, the horrors of their past return. Now it is up to the monsters to finally triumph over the monstrous.

Title: The Strange Case of the Alchemist's Daughter
Author: Theodora Goss
Year: 2017
Publisher: Saga Press
Purchase: Amazon (U.S.) | Amazon (UK).

Sherlock Holmes vs. Frankenstein (2015)

Another Holmes Frankenstein monster mash-up adventure, this one promising to "soon be a major motion picture." This is a novelization of an unproduced screenplay by Gautier Gazenave.

Only the most intriguing mystery could lure Sherlock Holmes from the comfort of Baler Street in the winter of 1898 ... and it came with the ghastly murder of a gravedigger in the most bizarre of circumstances. Thus it was that Holmes and Watson travelled to the tiny German village of Darmstadt to unmask a callous killer with an even more terrifying motive ... and all within the long, ominous shadow of Castle Frankenstein.

Title: Sherlock Holmes vs. Frankenstein
Author: David Whitehead
Year: 2015
Publisher: Creative Texts Publishers
Purchase: Amazon