The Secret Service Series 1 Episode 9 The Deadly Whisper ( Air Date 1969-11-16 ) Genre Animation, Sci-Fi & Fantasy, Action & Adventure, Family category. Overview "Unwin encounters trouble in his parish when a local scientist is held hostage and forced to complete work on a prototype ultrasonic rifle so that mercenaries can shoot down a new jet.".
The Secret Service Series 1 Episode 9 The Deadly Whisper
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- Watch: The Secret Service Series 1 Episode 9 The Deadly Whisper on CWR-CRB
- Stars: Stanley Unwin, Gary Files, Jeremy Wilkin, Sylvia Anderson, David Healy, Keith Buckley
- Director: David Lane, David Mitton, Reg Hill, Barry Gray
