To what extent do you agree with the view that writers in the gothic tradition present the boundaries between good and evil as blurred?

This question relates to the gothic ambiguity between good and evil, which is associated with the unknown and the liminal status and experience of various characters. Arguably, the boundaries between good and evil are central to the texts i have studied in a variety of ways. In Chaucer's short story 'The Pardoner's Tale', it is the ambiguous liminal gothic figure The Elderly Man whom Chaucer perhaps uses to create reader intrigue. In some ways the boundaries between good and evil are blurred as the elderly man is presented as an obscure figure whose body is completely covered in bandages "except thy face" and who points the travellers in the direction of Death, which could be interpreted as an evil action. Yet, due to the lamenting rhetoric of his speech "when shall my bones be at rest?" and "I knock with my staff both early and late, O mother when will you let me in?!", it perhaps gives him a less sinister identity as it inspires feelings of pathos within readers, thus blurring the boundary between good and evil. Here, the old man who cannot die is presented as a doppleganger to Coleridge's Ancient Mariner who cannot die either. This arguably implies that the old man in Chaucer's story is an evil man seeking death as retribution for his sins.