'The Djinn' Review: Be Careful What You Wish For 'The Djinn' Review: Be Careful What You Wish For David Charbonier and Justin Powell's tense shoestring thriller sets a mute boy against the malevolent spirit he's conjured. Dennis Harvey, provided by FacebookTwitterEmail Running time: 81 MIN. Woe betide the grade-school-age lad who finds himself in a movie by writing-directing duo David Charbonier and Justin Powell: He may survive their plotlines, but it won’t be pretty. Their official first feature, “The Boy Behind the Door” (which will debut on streaming platform Shudder July 29) found two such kids fighting for their lives after being abducted by a stranger. In the new, more supernaturally tilted “The Djinn,” they’ve crafted another effective suspense exercise from the same basic premise, trapping a juvenile protagonist in a home with a malevolent nemesis.