A disgruntled phone company employee develops a device whereby those answering a phone can be murdered, and it's up to Nat Bridger to stop the killer.
Richard Chamberlain
John Houseman
Sara Botsford
Robin Gammell
Gary Reineke
Barry Morse
Alan Scarfe
James B. Douglas
Ken Pogue
Neil Munro
Jefferson Mappin
Tom Butler
Colin Fox
Luba Goy
Lenore Zann