Books in the The Irregular series

As a boy, he spied for Sherlock Holmes. As a man, he must save the Empire.

The follow-up to the acclaimed The Irregular: A Different Class of Spy and the second book in 'a great new series' (Mick Herron, author of Spook Street)

The follow-up to the acclaimed The Red Ribbon and the third book in 'a great new series' (Mick Herron, author of Spook Street)