No sooner do teenage sleuths Irene Adler, Sherlock Holmes, and Arséne Lupin reunite in London than the murder of a renowned opera composer's assistant and the subsequent disappearance of a world-famous singer send them out into some shady neighborhoods in search of clues. Adler's narrative, a translation from the Italian, uses some anachronistic language character is described as "ditzy," for instance t readers will enjoy the sometimes quarrelsome trio as it puzzles its way to the truth through double-crosses, sudden attacks, credible clues, red herrings aplenty, a barely prevented second murder, and a developing romantic triangle. Note: author Alessandro Gatti is using the pen name Irene Adler here.

It's fall of 1870 when Irene, Sherlock, and Lupin team up for their second case. This time, they're all in London--the teenage Sherlock's hometown--when an opera composer's assistant is murdered, and Lupin's father is framed for the crime. Despite a handful of inaccuracies (anachronistic and otherwise), the mystery is action packed, and Irene's a feisty, likable narrator, with detective skills to boot.