Few cinematic tropes are as easy — and annoying — to deploy than the winking revelation that “it was all just a dream!” And while filmmaker Anthony Scott Burns mostly avoids falling into that particular narrative trap in “Come True,” a horror outing built around literal nightmares that just might be real, he can’t avoid other missteps that do similar damage to an otherwise compelling story. In just his second feature, , but a series of stumbles in the film’s final act — the worst of which is run through with icky implications Burns seems terribly unaware of — end the film on a wearisome final point.

Most of the work that gets us there is good, however, and Burns’ ability to build an original horror film out of compelling ideas is obvious. Bolstered by a strong performance from Julia Sarah Stone and an intriguing setup, “Come True” has plenty of elements worth celebrating,...