With Sherlock Holmes missing, and the fair city of London ravaged by crime, the Baker Street Irregulars move into 221B Baker Street.

When the Lord Mayor's daughter goes missing and they agree to help Eliza Mayhew find her grandfather, the Irregulars embark on their first case - and quickly discover that they are up against a sinister villain... Follow the adventures of the Baker Street Irregulars as they hunt for clues and crime-solve their way across London in these full-colour graphic novels.

This is book 1 in a new series written "in canon" by New York Times best-selling author Tony Lee, drawn by critically acclaimed artist Dan Boultwood, and supported by one of the world's foremost authorities on Sherlock Holmes, Leslie S.

Klinger.