In addition, Thornton was an assistant editor on the films Wolfen (1981, with music by James Horner) and The Osterman Weekend (1983, starring Meg Foster and Chris Sarandon) and was editor on the films Body Slam (1987) and Blood Red (1989). As post-production supervisor, he worked on such films as Best Seller (1987) and Miracle Mile (1988, starring Denise Crosby and Robert DoQui).