William Shatner

Peter Gifford

Patty McCormack

Janet Sommers

Lee Kinsolving

Dan Carlyle

Virginia Field

Mrs. Katie Sommers

Edward Platt

Mr. Morton

Beau Bridges

Stephen

Jocelyn Brando

Mrs. Ryker

Phillip Terry

Mr. Carlyle

Stephen Dunne

Bobby Herman Sr.

Arch Johnson

Mr. George Sommers

Judee Morton

Charlene

Suzi Carnell

Marge Ryker

Jan Norris

Terry

Peter Virgo

Fred - Dean of Boys

Stafford Repp

Police Captain

Bruce Kerner

Mark

Peter Virgo Jr.

George

C. Lindsay Workman

Science Teacher

David Geffen

(uncredited extra)