George Segal
Harry Calder
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
Harry Calder
Agent Hoyt
Young Man
Keefer
Fran
Simon Davenport
Tracy Calder
Helen
Benny Neilson
Bert Lyons
Wayne Moore
Police Captain Christie
Demerest
Mayor
Mandell
Jackie
Owner #2
Hippie Boy
Girl in Line
Boy in Line
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