The dark and witty New York Times bestselling series... The inspiration for Showtime's critically acclaimed show... Double Dexter is Jeff Lindsay's completely new, wickedly entertaining novel. A witness. Such a simple concept - and yet for Dexter Morgan, the perfectly well-disguised monster, the possibility of a witness is unthinkable. But when Dexter is on a very private, very satisfying excursion one evening with a wretchedly deserving playmate, the unthinkable happens: someone sees him. Dexter is…