The Wretched may be guilty of stealing shamelessly from "Rear Window," "Disturbia," and the best summercamp slasher and small-town supernatural chillers, but none of those were exactly raw innovators, either.

There's enough solid internal logic mixed in with the murky ambiguities to keep The Wretched far more compelling than its generic title might suggest. The filmmakers are working to a formula, but they definitely have fun with it, which is contagious.

The film successfully mixes together a lot of things, from the waterfront tourist-town setting of “Jaws” to a general teen fantasy-adventure feel that tempers (without weakening) horror content variably redolent of “It,” “Fright Night” and myriad other predecessors. If originality isn’t a strong suit here, the film’s conviction and polish make that a minor sin.

Blessed with shivery setups and freaky effects — here, skin-crawling is literal — The Wretched transforms common familial anxieties into flesh, albeit crepey and creeping.

Genre buffs are probably more interested in witch’s kidnapping children than Ben’s family divorce. But the Pierce’s deliver on both fronts, so much so that you may never walk into a basement again.