Meh--More Made-for-TV than Big Screen5/10
Jinn is a film which can't decide whether it's a horror flick, a sci-fi/ fantasy romp, or an origin story launch for an independent noir graphic novel hero (please note, I have no idea if Jinn is based off a comic, but they're obviously trying to force-start a franchise.) Like the film's protagonists who attempt to create a super amalgamation of Christianity, Islam, and Judaism, only to have it come across as vaguely anti-Muslim and awkward, (and the 'edgy' sound track choices which just end up being bafflingly bizarre,) this mix doesn't quite work, and the film would have been better served choosing one genre, and doing it well, instead of all and fumbling through it. There are some genuinely creepy moments, which are ruined by the comedy, and the comedy is in turn ruined by the complete, posturing cheesiness of some of characters and dialogs. Several plot devices could have come straight from their TVTropes.com pages, and certain scenes feel almost as if they were lifted from famous, better-made, movies.
The production value is very high, which helps and hinders. There are many actors with recognizable faces doing the very best they can; some extremely expensive camera shots; well-done (and plentiful) effects; fighting and driving stunts; and seriously, what is the point of the sports car? The high production values prevent the film from be a crappy delight, but make the confusing plot bearable to watch. Watching Jinn, you'll wonder who in the world would pour so much money into a movie who's plot and screen play feel more like a made-for-TV film you stumble onto after midnight on the Sifi channel than the big budget blockbuster it longs to be.
If you like films like "Season of the Witch," "Outlander," or random, independent movies from Red Box, you'll probably like Jinn, but otherwise, this is a film to watch with a bunch of drunk friends and make fun of, though there are other, better, choices for that.