The Sunday Times bestseller. Strap in for an explosive and action-packed thriller that will have you on the edge of your seat.

A bomb is ticking in the heart of London. The race to stop it is on.

They call him the Tick Tock Man. Major Tom Harrison has spent his career walking towards what everyone else runs from. As one of Britain’s top Ammunition Technical Officers, he’s defused too many bombs and buried too many friends to count.

When a new coded warning from the Irish paramilitary group AIDAN reaches the authorities, Harrison is called back into action — and straight into a nightmare.

Each new device he faces is more intricate, more lethal — and more personal. The bombs bear the mark of a genius: a master bomb-maker whose timing mechanisms seem designed to taunt him.

As the AIDAN campaign spreads across London — from Oxford Street to Paddington and beyond — Harrison realises the attacks follow a chilling pattern . . . someone with insider knowledge is helping the terrorists.

With every second lost, another life is at risk.

And someone wants Harrison silenced before he uncovers the truth.

Every device has a timer. Every man has a limit. And Tom Harrison is about to find both.

The Tick Tock Man is a gripping, pulse-pounding thriller perfect for fans of Andy McNab, Chris Ryan, Duncan Falconer, Tom Clancy and Stephen Leather.

MEET MAJOR TOM HARRISON

Formerly a captain in 321 EOD Squadron, Belfast — Harrison is one of the Army’s most decorated bomb-disposal officers. He’s spent his career walking towards explosives and away from the people who love him. Calm, precise, and disciplined, Harrison knows every wire he cuts comes down to nerve and faith. Off duty, he’s a quiet man, devoted to his wife Pippa but the couple are often kept apart by the demands and secrecy of his work. He doesn’t see himself as a hero — just a man doing the job no one else can.