As far as the family history goes, the Baskervilles are an old and cursed line haunted by the sins of their ancestor in form of a hellish beast. However, Holmes rejects the metaphysical explanation and searches for a human being to blame. He solves the crime by tracing the physical similarities between the
portrait and the culprit, with his scientific method “blurring the line between the voluntarily or culturally influenced and the biologically programmed” (Jann, 1990). In this way, the story follows the 19th century fashion for the theory of genetic determinism claiming that Stapleton’s guilt is a hereditary phenomenon, his inescapable legacy of sin engraved in the cells of his body.
Another strong element pertaining to the origins of guilt in the story comes from abroad. While the Baskervilles represent traditional English nobility on the outside, their standing is shaken, and they are forced to search for wealth in other countries. Although Sir Charles’s death is attributed to pure terror, Simmons labels it as a “guilt death” and “the result of horror that one’s past imperial deeds are about to be revealed” (2002). In its turn, Stapleton’s substantial exposure to foreign contamination corrupts his conscience past the point of fear all the way to ultimate delinquency. Thus, the foreign with its depravities and temptations forces the respectable English soul to betray its values and plunge into the darkness of degradation and guilt.
On the one hand, The Hound of the Baskervilles advocates the hereditary nature of human vices naming biology as the main source of the criminal’s guilt. On the other hand, Conan Doyle shows that genetic predisposition requires an impetus from the outside to fully develop, and this impetus can be provided by the influence of foreign cultures. All in all, there are several forces, both inner and outer, that bring out the evil in a person, and the most abominable terrors occur when such forces act in unison.