The Adventure of the Empty House by Arthur Conan Doyle

After faking his death to defeat Moriarty, Holmes returns to London and works in secret to capture the professor’s remaining lieutenant. He uses a wax figure decoy and careful surveillance to draw out Colonel Sebastian Moran, who plots to assassinate him. The plot is both a continuation of The Final Problem and a triumphant return. It reestablishes Holmes and Watson’s partnership. A clever tale of justice and revenge.