Lady Frankenstein's Lover
Shivers: Tales of Erotic Nightmare Book 2

 The fiery, passionate Elizabeth Frankenstein finds herself bound into a loveless, celibate marriage to her cousin, Victor. She finds a man who truly makes her happy, but an extramarital affair can be trying, especially when one is married to the most infamous mad scientist in history.
(Please note that this book does contain depictions of sexuality that one may consider deviant.)