Plot: In the 12th season premiere, a series of destructive fires strike Virginia City, and always late at night. Is it the work of a ruthless arsonist, or someone very close to Deputy Clem?

Bonanza - Season 12 - The Night Virginia City Died (Episode 1)
Episode Aired On:
Sunday, September 13 1970
54 years ago
Sunday, September 13 1970
54 years ago
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Episode 2