Smile delivers a tense psychological horror experience built on atmosphere rather than sudden shocks, though it’s held back by a flimsy narrative and characters that aren't fully realized. The film creates suspense well through its visuals, sound, and unusual camera techniques; however, the repeated use of certain elements and a foreseeable conclusion lessen the overall effect. Even with some compelling scenes from the central performer, uneven acting choices and plot threads that don’t get tied up make this first effort feel interesting but ultimately unfinished.

Source on TMDB