Lights Out stands among the finest horror films released in recent years; its originality is matched by how skillfully it’s brought to life. The film features some truly remarkable and imaginative visual effects, easily among the most striking I've encountered. The central idea—a supernatural presence that can only manifest in shadow—results in several scenes displaying these unsettling and inventive special effects. The performances avoid clichés common in horror movies, giving the characters depth. Director Sandberg’s passion for the story is evident as he introduces fresh and exciting scares throughout. It’s a film that might inspire you to keep all the lights on! There are some very good frights here. The initial idea is captivating. The effects are astonishing. Anyone with even a passing interest in horror should make an effort to see Lights Out.

Source on TMDB