Please note: In order to keep Hive up to date and provide users with the best features, we are no longer able to fully support Internet Explorer. The site is still available to you, however some sections of the site may appear broken. We would encourage you to move to a more modern browser like Firefox, Edge or Chrome in order to experience the site fully.

The Sigma Protocol, Paperback / softback Book

The Sigma Protocol Paperback / softback

Paperback / softback


A missing murder victim; an agent declared rogue. Someone wants a secret kept, no matter what the cost...A superb standalone thriller from the internationally bestselling author of the Bourne series. Ben Hartman is on holiday in Switzerland when he meets a childhood friend - who promptly tries to kill him.

In self-defence, Ben kills his attacker, but soon the body and all evidence of the confrontation have disappeared.

Anna Navarro, a US government agent, is sent to look into a string of deaths around the world.

The only thing the victims have in common is an old OSS file, codenamed SIGMA.

But as soon as she starts to get somewhere, she is dragged off the case and declared rogue.

Someone wants this secret kept, and not only are the futures of Hartman and Navarro at stake, but also that of the free world...


Other Formats



Free Home Delivery

on all orders

Pick up orders

from local bookshops