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.
Paul Ryan
Lynn D. Compton
Mary Brokaw
Nicholas Devaney
Sgt. Andrushian
Dr. Donald Stuart
Sidney A. Cherniss Jr.
Bob Ramirez
Dr. Carl Enright
Dr. Rudolph Grainger