Detective-Lieutenant Gene Trimble investigates the latest in a long line of inexplicable suicides, this one being the death of Ambrose Harmon. Harmon was the CEO of Crosstime Corportations, a business that specialized in producing technology to enable time travel. Time travel is common, but it’s tricky: the chance of returning to one’s original timeline is slim. Only one man managed to do it, Gary Wilcox, but he too killed himself. Unable to solve the mystery, Trimble becomes apathetic, and he tries killing himself, again and again, across all possible timelines.