This very welcome turn into less familiar territory means that The Blue Hour can abandon or at least heavily supplement its overly familiar coming-out and first-love romance angle, with several scary occurrences and twists producing both welcome and unwelcome frissons that’ll keep audiences on their toes. But Boonyawatana’s command of the film's tricky, mercurial tone isn’t strong enough to keep the film readable or even just engaging throughout and at almost 100 minutes, there’s at least a good 15 minutes that feel like filler material.