All The Kind Strangers (1974)

A photographer is kidnapped by kids who want him to pretend to be their father. They have already kidnapped a mother, so they need a matched set. The kids aren't psychotic or overtly evil. It's like The Waltons. They dress in rustic clothes. Send a scout named Gilbert, an eight year old who is really about twelve, to lure innocent adults to their lair. There are so many holes in the story, that it just falls apart.