The Munsters (1964)

S2E13 Underground Munster

The Munsters' beloved pet, Spot, escapes and is seen lurking in the sewer, leading the townsfolk to believe they have encountered a fearsome creature. In an effort to find Spot, Herman ventures into the manhole but is soon misidentified as a terrifying monster himself. Alarmed, the Mayor declares a mission to eliminate these threats, planning to use TNT to cleanse the city of what he perceives as a menace.