Neighbors (1981)

"Lock the doors... here come the Neighbors"

One man's quiet suburban life takes a sickening lurch for the worse when a young couple move into the deserted house next door. From the word go it is obvious these are not the quiet professional types who *should* be living in such a nice street. As more and more unbelievable events unfold, our hero starts to question his own sanity... and those of his family.