Background
Doyle uses the familiar detective frame to stage a story within a story. The first half asks how an apparently impossible crime was arranged; the second changes the reader’s understanding of the people and institutions behind it.
Reading notes
- Treat the opening investigation and the later backstory as linked but distinct puzzles.
- Record which details are observed directly and which arrive through testimony.
- Watch how identity, aliases, and incomplete information shape the solution.
Version note
Text source: the Standard Ebooks EPUB edition identified on this page. This site extracted the English text and retained the source edition’s chapter order. Public-domain status must be checked for the territory where the text will be distributed.