The Night the Heads Came

"There's no such thing as an alien—at least that's what Leo thinks, until he and his friend Tim are abducted late one night on a deserted road. When Leo comes to, Tim is gone, and no one believes his story. After he sees a psychiatrist and undergoes hypnosis, even he doesn't believe his story. But then memories begin to surface—memories he can't push away—and when Time suddenly returns, Le knows they are in otherworldly extraterrestrial danger." — quoted from the back cover of the third printing of the Penguin paperback edition.