Not only has the chicken landed, the chicken has flown, as well! (For the reference used here, read the novel version of The Eagle Has Landed (1975) and the sequel novel The Eagle Has Flown (1991), both by Jack Higgins. And, by the way, this isn't the only example of a book that was made into a movie making a sequel book that never was, still hasn't been and almost certainly never will be. Peter Gent did the same thing with his duology, the novel version of North Dallas Forty (1973) and its sequel novel North Dallas After 40 (1989).)