How good is this? It’s so good that when one of the invaders puts that knife out so that Agnes Moorehead grabs the blade, I jumped out of my skin. This should not have been a surprise. I guess I’ve seen maybe forty or so episodes of The Twilight Zone over the years, enough to claim two favorite installments – this is one – and seen some of those forty, like this one, many, many times. Richard Matheson’s story hasn’t lost any of its power to frighten and startle. Our son stayed under a blanket for minutes at a time, babbling quietly to reassure himself. It’s just a perfect half-hour of TV.