Futuristic speculation combines with murder when a scientific expedition on a faraway planet searches for an alien species only to be stalked by a determined killer who may be a hostile alien or a member of their own team.

The threat of Moriarty is gone-but so is Sherlock Holmes. Even as they mourn the loss of their 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 hires...