Rollercoaster

George Segal

Harry Calder

Richard Widmark

Agent Hoyt

Timothy Bottoms

Young Man

Harry Guardino

Keefer

Susan Strasberg

Fran

Henry Fonda

Simon Davenport

Helen Hunt

Tracy Calder

Dorothy Tristan

Helen

?

Harry Davis

Benny Neilson

Stephen Pearlman

Bert Lyons

?

G.F. Rowe

Wayne Moore

Wayne Tippit

Police Captain Christie

Michael Bell

Demerest

Robert Quarry

Mayor

?

Richard Altman

Mandell