'An incredible debut' DON WINSLOW, New York Times bestselling author of The Cartel
'The Time Machine meets The Da Vinci Code' CHRIS HAMMER, internationally bestselling author of Scrublands
Humanity's best kept secret may be its best hope for survival.
In the midst of World War Two, Enigma codebreaker Alan Turing finds himself on the brink of a discovery that will change the world: a way to send a message back into the recent past. But when his invention successfully averts disaster on D-Day, the danger it poses in the wrong hands becomes terrifyingly clear. As Turing's enemies close in, only one decision is possible: Nautilus must be kept hidden from the world, safe in the care of the only person he can trust.
Seventy-five years later, Annabelle McIntosh's life is upended when she learns she will become the latest custodian of the greatest secret of the modern age - Turing's Nautilus machine. Following in her family's footsteps, and bound by Turing's strict principles governing the use of his creation, Annabelle is soon faced with the same impossible choices. Nautilus has the power to prevent catastrophe, but the wrong decision could have devastating consequences.
When the stakes are at their highest, will using the machine save the world - or destroy it?
'A smart, gripping thriller with an amazing big idea behind it. I loved it' T.J. NEWMAN, internationally bestselling author of Falling
'A fascinating alternative history with an intriguing "what if" at its core' DERVLA McTIERNAN, internationally bestselling author of What Happened to Nina?
'A ripping tale of past-careens-into-present fiction. Urgent morse code message to my past self: READ THE TURING PROTOCOL NOW' TRENT DALTON, internationally bestselling author of Boy Swallows Universe
| ISBN: | 9781398552180 |
| Publication date: | 7th May 2026 |
| Author: | Nick Croydon |
| Publisher: | Simon & Schuster UK Ltd. an imprint of Simon & Schuster UK |
| Format: | Paperback |
| Pagination: | 320 pages |
| Genres: |
Second World War fiction Science fiction: time travel Modern and Contemporary Fiction Alternative history fiction Espionage and spy thriller Technothriller Historical Fiction |
'An incredible debut' DON WINSLOW, New York Times bestselling author of The Cartel
'The Time Machine meets The Da Vinci Code' CHRIS HAMMER, internationally bestselling author of Scrublands
Humanity's best kept secret may be its best hope for survival.
In the midst of World War Two, Enigma codebreaker Alan Turing finds himself on the brink of a discovery that will change the world: a way to send a message back into the recent past. But when his invention successfully averts disaster on D-Day, the danger it poses in the wrong hands becomes terrifyingly clear. As Turing's enemies close in, only one decision is possible: Nautilus must be kept hidden from the world, safe in the care of the only person he can trust.
Seventy-five years later, Annabelle McIntosh's life is upended when she learns she will become the latest custodian of the greatest secret of the modern age - Turing's Nautilus machine. Following in her family's footsteps, and bound by Turing's strict principles governing the use of his creation, Annabelle is soon faced with the same impossible choices. Nautilus has the power to prevent catastrophe, but the wrong decision could have devastating consequences.
When the stakes are at their highest, will using the machine save the world - or destroy it?
'A smart, gripping thriller with an amazing big idea behind it. I loved it' T.J. NEWMAN, internationally bestselling author of Falling
'A fascinating alternative history with an intriguing "what if" at its core' DERVLA McTIERNAN, internationally bestselling author of What Happened to Nina?
'A ripping tale of past-careens-into-present fiction. Urgent morse code message to my past self: READ THE TURING PROTOCOL NOW' TRENT DALTON, internationally bestselling author of Boy Swallows Universe
The Turing Protocol features in the following genres: Second World War fiction, Science fiction: time travel, Modern and Contemporary Fiction, Alternative history fiction, Espionage and spy thriller, Technothriller, Historical Fiction
The Turing Protocol is available in Paperback, Hardback
The Turing Protocol was written by Nick Croydon and published by Simon & Schuster UK Ltd. an imprint of Simon & Schuster UK
The Turing Protocol has 320 pages
£8.99