Christopher George as Det. Lt. Bracken

Lynda Day George as Mary Riggs

Frank Braña as Det. Sgt. Holden

Edmund Purdom as The Dean

Ian Sera as Kendall James

Paul L. Smith as Willard

Jack Taylor as Prof. Arthur Brown

Gérard Tichy as Dr. Jennings

May Heatherly as Mrs. Reston

Leticia Marfil as Suzie - Locker Room Victim

Hilda Fuchs as Grace

Isabel Luque as Sylvia Costa (as Isabelle Luque)

Silvia Gambino as Mary, elevator victim

Emilio Linder as Coroner

Pilar Alcón as Girl in Puzzle

Huang Kin-Lung as Karate Professor

Cristina Cottrelli as Jenny, pool victim

Carmen Aguado as Carla - Aerobics Instructor

Paco Alvez as Alister Schwartz

Joanne Metherell as Virginia Palmer - 1st Victim