"A Deputy District Attorney suspects that a nurse has been murdering her rich husbands and relatives by giving them unneeded insulin doses, but his superiors don't believe him."
Robert Conrad
as Paul Ryan
Howard Duff
as Lynn D. Compton
Diane Baker
as Mary Brokaw
J.D. Cannon
as Nicholas Devaney
Gerald S. O'Loughlin
as Sgt. Andrushian
Alfred Ryder
as Dr. Donald Stuart
Scott Brady
as Sidney A. Cherniss Jr.
Carlos Romero
as Bob Ramirez
Dana Elcar
as Dr. Carl Enright
David Opatoshu
as Dr. Rudolph Grainger
Patric Knowles
as Charles Lloyd
Alan Hewitt
as Judge Tanner
Fredricka Meyers
as Vee Ryan
Chuck Daniel
as Larry Triplett
Ford Rainey
as Dr. Ellis Anders
Dean Harens
as Judge Skinner
Howard Culver
as Newscaster
Christopher Riordan
as Ricky
Tony Martinelli
Editor
Boris Sagal
Director
Frank Comstock
Music
Alric Edens
Director of Photography
Robert Forward
Executive Producer
Ralph Ferrin
Assistant Director
Jack Webb
Harold Jack Bloom
Producer
George C. Webb
Art Direction
Writer