and "How did you die? and "It's the most popular question in Hell, and Mitchell Johnson has been answering it ever since he was hit by a bus at age seventeen and inexplicably ended up in the Underworld. Now Mitchell is The Devil's intern in Hell's accounting office. Lately, he's noticed a disturbing trend: the volume of new arrivals is straining Hell's limited resources. Then Mitchell overhears his boss discussing plans to limit newcomers with a legendary time travel mechanism. With a device like that, Mitchell realizes, he could change history and prevent his own death. Mitchell's plot goes awry when his three closest friends - Alfarin, the Viking prince; Elinor, from 17th-century London; and Melissa, from 1960s San Francisco - insert themselves into his plans. It soon becomes clear that the fates of all four are entwined in dangerous and unpredictable ways. With unforgettable characters and a thrilling premise, this original novel is by turns funny, poignant, and thought-provoking.