“Oddity,” the latest stab at supernatural unease from director Damian McCarthy (“Caveat”), is an undeniably unique little tale, not far from living up to its title and instead walking a line between conventional horror tropes and a handful of attempts to set itself apart from the crowd in ways that fall ever short in crossing the finish line. It’s a film that wears its potential on its sleeve, with messages somewhat buried under a story that shifts direction as if to suggest a series of deliberate screenwriting pivots or indecision as to the core plot and a slight disappointment as there’s nary a poor performance to be had, nor any editing missteps or difficulty making it to the end.