Sherlock Holmes vs Cthulhu Mmpb Adv of the Deadly Dimensions

"FIRST IN A BRAND NEW SERIES OF CTHULHU/SHERLOCK CROSSOVER FICTION. Bizarre geometries lead members of a secluded cult to build strange constructs. When completed, these items enable horrifying other-worldly creatures to enter our dimension. Meanwhile, a series of grisly murders rocks London. At each location, only a jumble of bones remains of the victim, along with a bizarre sphere 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."