One quick look . . .
Watched this with the wife last night, courtesy of YouTube. No offense to actor John Shea, but I took one look at the guy and said "I don't like the looks of him - betcha he's the villain."
And a tip 'o the derby to Tiffany Taubman, who did a first-rate job in playing the abused daughter. I often marvel at how these young children could put on such believable performances.
I suspect the director had a hand, as I remember "Close Encounters" with that great refrigerator scene where the little boy intently watches the off screen alien and suddenly breaks out in a big smile. Spielberg had a clown pop up from behind some scenery. Great stuff.