This thesis explores Hogg's interpretation of indeterminacy both throughout his career and in Justified Sinner, especially in the character Gil-Martin. Hogg seems to reject the tradition of choosing one side over another in such a dichotomy, and instead chooses to look at both extremes as equally co-present. Hogg wrote Justified Sinner within the framework of the literary Gothic tradition and used Gothic tropes to create ambiguity throughout his novel, as is the case throughout his body of works. Many of the ambiguities in Justified Sinner center on the character Gil-Martin. My interpretation of Gil-Martin's ambiguity complicates the traditional scholarship on Justified Sinner.