 No whodunit, this episode. Hunter Kaskov, a gifted med student, has for a while been playing with friends a dangerous game, flat-lining: testing how long one can be left clinically dead before revival becomes impossible; to his girlfriend Jenny Slater s horror, he decides to  seize their only chance to see how taking a life feels  by not reviving workaholic colleague Max Ketterson, whose corps he slips into the path lab, drained of all his blood. To her bafflement that s not enough, he plays games with the police (Steve) planting false clues, just for the kick of nearly getting caught- or will he be fatally outwitted by Mark?