Drunk on the Moon series. If you haven't checked out Mr B's series, you are in for a treat. I had a lot of fun playing in his world with PI-turned-werewolf Roman Dalton. More as the time approaches, but I promise mayhem and humour in equal parts.
But on to the Forgotten:
Werewolf of Paris by Guy Endore (1933)
I think that this is one of the books I gave away while jettisoning my library for the move to Ireland, which I probably regret (but surely I can get an ebook). It was the primary source for Hammer's Curse of the Werewolf with its cursed child born out of wedlock on Christmas day, his mother violated by a priest. The young child Bertrand discovers strange hungers as he grows up, dreaming that he has changed into a wolf (oops, the dreams are real) and his uncle finds it difficult to cover up the increasingly nasty shenanigans of his nephew. After an explosion of assault, incest and murder, Bertrand runs off to Paris. He tries to find ways to manage his affliction and joins the Guard to fight in the Franco-Prussian war. He falls in love with an innocent girl. They try to cope with his hungers by letting him drink her blood. But eventually Bertrand fears he will hurt Sophie and ventures once more out into the city to satisfy his dark desires, exposing his secret and resurrecting danger for them both. The rest of the story is suitably gothic and tragic against the historic backdrop of the Paris Commune.
This is a fine gem and one that horror and Gothic fans will enjoy. For more overlooked treasures, drop by Patti Abbott's blog for a full round-up.