The infamous thief Arsene Lupin is a sort of Scarlet Pimpernel crossed with Moriarty. It's a short, fast-paced detective story told from the investigator's perspective. Unfortunately, Lupin's identity is clear very early in the book, and the investigating is of the most rudimentry sort. Eventually we meet Lupin's gang, who I like best of everyone in the book, and the love interest, who I don't like at all.