"Door of the Unreal" by Gerald Biss is an early werewolf novel that intertwines elements of weird fiction with a gripping crime narrative. Set against the backdrop of Sussex, the story unfolds through two mysterious disappearances, one involving an aristocrat and a famous actress, which prompts a large but ultimately fruitless investigation by Scotland Yard. An American visitor, concerned by the peculiar events, embarks on his own investigation, driven by a sense of foreboding. This tale, praised by H.P. Lovecraft, resonates today with its exploration of fear, the unknown, and the lengths one will go to uncover the truth, making it a timeless reflection on human curiosity and the darker facets of society.