Detour is a 1945 film noir cult classic that stars Tom Neal, Ann Savage, Claudia Drake and Edmund Mac Donald. A B-movie, it was shot in six days. The film, budgeted for $89,000, ended up costing $117,000 to make.
"Detour" is the fourth episode of the fifth season of The X-Files. On the way to an FBI convention, Mulder and Scully take a trip through the woods, where an ancient monster lurks. Text taken from the Detour summary http://en.wikipedia.org/wiki/List_of_The_X-Files_episodes#Season_5:_1997-1998 here.