The Munsters

The Fregosi Emerald (2x21)

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Eddie gives Marilyn a ring he found in the attic as a birthday present. Grandpa recognizes it as the Fregosi Emerald, a centuries-old ring with a Transylvanian curse. Herman doesn't believe in such a silly superstition; he is intent on proving that the ring does not bring about bad luck. He quickly regrets trying to do this.