Overview
Maurice Leblanc sends Arsène Lupin through a fast-moving mystery involving murder, disappearance, stolen identities, deception, and a cryptic number.
This title is catalogued in Mystery & Detective. Its reading profile is Medium and Accessible, with themes including crime, disguise, cleverness, pursuit, mystery.
One-Page Summary
813 places Arsène Lupin inside a mystery that is larger, darker, and more politically dangerous than the gentleman-thief stories that made him famous. A brutal murder, mysterious clues, secret identities, and the threat of an international conspiracy pull Lupin into a case where he is not simply choosing what to steal. He has to discover who is manipulating events and why, while the police and rival criminals pursue their own theories. As usual with Lupin, identity is unstable. Characters appear to be one person and turn out to be another; apparently impossible clues have been staged; objects move in ways that seem supernatural until the trick is revealed.
The title itself refers to the coded importance of the number 813, one more layer in a puzzle built to keep both the detective and the reader guessing. Leblanc’s great strength is momentum. Every answer creates another question, and Lupin’s confidence can turn a dangerous situation into a performance. Yet the novel also gives him a more serious burden: his intelligence is useful precisely because the problem cannot be solved by ordinary justice alone. The story is therefore a blend of detective fiction, adventure, and identity game, with Lupin constantly moving between outlaw and investigator.
The pleasure lies in watching a man who is usually in control become trapped inside a puzzle clever enough to deserve him.
Key Themes
Crime: This title is tagged with crime as one of its main themes.
Disguise: This title is tagged with disguise as one of its main themes.
Cleverness: This title is tagged with cleverness as one of its main themes.
Pursuit: This title is tagged with pursuit as one of its main themes.
Mystery: This title is tagged with mystery as one of its main themes.
Detective: This title is tagged with detective as one of its main themes.

