Revenge in London for injustice elsewhere in Arthur Conan Doyle's "A Study in Scarlet" and "The Sign of the Four"

In both "A Study in Scarlet" (1887) and "The Sign of the Four" (1890), the novels by Arthur Conan Doyle that introduced the character of Sherlock Holmes, the murder the detective solves is committed in London as revenge for acts committed far away: in Utah in "A Study in Scarlet"; in India in "The Sign of the Four". Further, both murderers, Jefferson Hope in "A Study in Scarlet" and Jonathan Small in "The Sign of the Four", have the opportunity after their arrest to justify their revenge at great length by telling the story that explains why they were led to the mysterious murders that only Holmes is able to solve. (Andrew Shields, #111words, 7 October 2022)