Released on the 1st February 2024.

The co-writer of the Adventures on Trains series spins a thrilling, brilliantly clever mystery through the streets of London, as the Chief Horologist in charge of Big Ben disappears and his son must solve a multitude of clues and codes to find him.

Aspiring inventor Isaac Turner lives with his dad, the Chief Horologist in charge of Big Ben. But when his father vanishes from the belfry on the night the clocks go back, leaving behind only a smashed pocket watch and a cryptic message, Isaac determines to find him.

Hunting a trail of clues through London’s landmarks, Isaac uncovers a sinister plot in the gears of government and embarks on a race against time to save his father – and time itself.

A locked-room mystery packed with rooftop chases, hidden codes and mind-bending science, The Clockwork Conspiracy is a must for fans of the Adventures on Trains series and Sharna Jackson's High Rise mysteries.