As detailed in "Savage Detours: The Life and Work of Ann Savage", great care was taken during the postproduction of "Detour". The final picture was tightly cut down from a much longer-shooting script, which had been shot with more extended dialogue sequences than appear in the released print. The soundtrack is also fully realized, with ambient backgrounds, motivated sound effects, and a carefully scored original musical soundtrack by "Leo Erdody", who had previously worked with Ulmer on "Strange Illusion" (1945). Erdody took extra pains to underscore Vera's introduction with a sympathetic theme, giving the character a light musical shading in contrast to her razor-sharp dialogue and its ferocious delivery by Savage.