Jefferson Hope is a fictional character from the novel "A Study in Scarlet," written by Arthur Conan Doyle. He is portrayed as a vengeful man who seeks to avenge the deaths of his beloved, Lucy Ferrier, and her father, John Ferrier. His quest for revenge drives the plot and ultimately leads to his confrontation with Sherlock Holmes. Hope is depicted as a complex character, torn between his desire for justice and the moral implications of his actions. His backstory reveals a tragic past, highlighting themes of love, loss, and the consequences of vengeance.