The Christopher Factor (Hardcover) → Paperback ISBN-13: 9780738823287 ISBN-10: 0738823287 Genres: Literature & Fiction, Mystery, Thriller & Suspense ? The Christopher Factor (Paperback) → Hardcover ISBN-13: 9780738823294 ISBN-10: 0738823295 Genres: Literature & Fiction, Mystery, Thriller & Suspense ? |