James Farentino as Kevin Leahy

Claudette Nevins as Ellen Sumner

Eugene Roche as Sgt. Taplinger

Harrison Ford as Paul Winjam

Ann Dusenberry as Weezie Sumner

Diana Scarwid as Lane

Joan Hackett as Louise Gelson

Dinah Manoff as Celia

Carol Jones as Alex

P. J. Soles as Marty

Ethelinn Block as Barry

Susan Walden as Student

Lawrence Bame as

James R. Parkes as

Catherine Cunneff as

Stephanie Barton-Farcas as Biology Student (uncredited)