Bonanza Season12 Episode 22 The Silent Killer ( Air Date 1971-02-28 ) Genre Western, Action & Adventure, Drama, Family category. Overview "An epidemic of influenza hits the Ponderosa and the only person who seems sure of what to do is the wife of a doctor, whom Doc Martin says is a fraud.".
Bonanza Season12 Episode 22 The Silent Killer
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- Watch: Bonanza Season12 Episode 22 The Silent Killer on CWR-CRB
- Stars: Lorne Greene, Michael Landon, David Canary, Tim Matheson, Mitch Vogel
- Director: Bobby Somers, David Rose
