Bizarre geometries lead members of a secluded cult to build strange constructs. When completed, these items enable other-worldly creatures to enter our dimension. A series of grisly murders rocks London. At each location, only a jumble of bones remains of the victim, along with a bizarre sphere of bone covered in strange symbols. The son of the latest victim seeks the help of Sherlock Holmes, who in turn recruits his former partner, Dr. John Watson.
