In the movie, the dialogue doesn't specify whether the spirit inside Abby is Eshu. The plot's final resolution leaves the point unclear. In "And You Call Yourself A Scientist", Elizabeth A. Kingsley wrote "from a theological point of view, the final section of Abby is quite fascinating. Toward the end of the film, having spent some time taking the demon's measure, Garret decides that it is not in fact Eshu, but a rather pathetic Eshu wannabe... who presumably was imprisoned by Eshu."