This film was both more somber and dark, and also left the viewer with a ""cliffhanger"" ending; however, it had a very complex and sophisticated plot involving time-travel...She""s a Nazi" - Indy didn""t believe him, until she traitorously took back the diary ("You should have listened to your father").] Previously, Fonda (as lead actor), Hopper (as uncredited second unit director), and Jack Nicholson (as screenwriter) had participated in director Roger Corman""s low-budget, definitive LSD filmThe Trip (1967)a few years earlier.Dave arrived shortly later, found McCallum""s dead body, and located Tobie bound and gagged on a bed where he was confronted by Evelyn from behind.