The threat of Moriarty is gone - but so is Sherlock Holmes. Even as they mourn the loss of their friend and colleague, psychic Nan Killian, medium Sarah Lyon-White, and Elemental Masters John and Mary Watson must be vigilant, for members of Moriarty's network are still at large. And their troubles are far from over: in a matter of weeks, two headless bodies of young brides wash up in major waterways. A couple who fears for their own recently-wedded daughter hire the group to investigate, but with each new body, the mystery only deepens.