Rollercoaster

A nameless young terrorist threatens to sabotage roller coasters at various American amusement parks if he isn't paid a huge ransom. Safety inspector Harry Calder is reluctantly drawn into a game of cat and mouse, with many lives at risk.

Rollercoaster is a 1977 drama crime movie directed by James Goldstone, starring Henry Fonda, Timothy Bottoms, George Segal. It holds an IMDb rating of 6.3/10 from 7,502 votes and runs 1h 59m.