At a time (1934) when horror films filled the screen with Universal's neck-biters and plodding giants, there's this little voodoo obscurity from Columbia studios. It's a genuine oddity, more closely related to the great Val Lewton atmospheric series of the 40's than the genres of the 30's. Seems an upper-class lady (Burgess) returns to Haiti following a voodoo curse placed upon her as a child. Going with her are her husband (Holt), nanny (Wray), and daughter (Collins). The island is a dark place and soon the lady begins acting strangely. Is it the bygone curse or some other malign influence.
I'm not surprised that Lewton's I Walked With A Zombie (1943) references this film in its screenplay (IMDB). There are many parallels, especially in mood and setting. Moon, however, lacks the coherence and general impact of the later film. Nonetheless, there are many unsettling moments—the first voodoo ceremony where Burgess twists and leaps to the accompaniment of a resounding drum beat. In fact, the crowd scenes featuring natives in synchrony to the incessant beat are especially effective. However, the story itself never really gels into a riveting whole. Perhaps that's because the focus shifts too often, splitting the story into threads that tend to scatter the suspense.
Still, the movie's definitely worth catching up with, and may even surprise viewers considering its general obscurity.