Bill Mumy in the "It's a Good Life" episode of "The Twilight Zone." Everett Collection Bill Mumy and Jan Handzlik took different routes in their careers, but they share a common bond: acting in cl ...

I would have answered Dick Sargent. But then again, I’m just a bubble-headed boobie because the answer is 11-year-old Billy Mumy who played Darrin as a child in the 1965 episode, “Junior ...