John Lowery was declared dead in 1968--the victim of a Huey crash in Vietnam. Four decades later, Temperance Brennan is called to the scene of a drowning in Quebec. The victim appears to have died while in the midst of a bizarre sexual practice. The corpse is later identified as John Lowery. But how could Lowery have died twice? Taking the remains to JPAC in Hawaii for reanalysis, Tempe is joined by her colleague and ex-lover Detective Andrew Ryan...