Lake Tahoe does not surrender its dead.A Nevada Research Institute exploration vessel is found on Lake Tahoe absent a helmsman. Investigators learn that graduate student Marcus Kieslar, was scheduled to be on the craft and is missing. His car remains in the harbor parking lot. Lacking any evidence of foul play, it is preliminarily concluded that he accidentally fell overboard. Two other 'accidents', one at a local ski resort and the other involving...