Driving by his deep will of finding of finding perfect family, Jerry Blake, a young man that admires values, marries a widow with her children, but when they didn't follow his strict rules, he murders them all, so he goes into another country, where he marries another woman and prepares for making the same with her.
That's really all the movie needs to work: a sublime villain, with tight, driven direction, perfectly sturdy, effective writing, and a heroine who we can believe in.
The Stepfather works for American Eagle Realty, and the company logo pegs him as both a patriot and a predator. 'It's like living with Ward Cleaver,' his stepdaughter complains, not knowing that the 'cleaver' reference could be another pun...
While I was watching the film, I was distracted by elements of the Idiot Plot Syndrome -- moments when only an idiot would have made such obvious mistakes.