The Sigma Protocol
- First published 2001
- English
- Genres
- Fiction › Thriller & suspenseFiction › Crime & mysteryFiction › Action & adventureFiction › Thriller & suspense › Political thrillerFiction › Thriller & suspense › Spy thriller
- Themes
- Crime & justice › Serial killersPolitics & power › SpiesCrime & justice › MurderCrime & justice › Detectives Aging
- Mood
- Adventurous
- Where and when
- Switzerland
What readers say
3.83
13K ratings across the web 6 in 10 readers loved it, 1 didn't like it
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Details & editions
- This edition
- Ulverscroft Large Print Books Ltd, 2002
- ISBN
- 9781842832042
- Language
- English
Original edition The Sigma Protocol Originally published in 2001 · English · St. Martin's Press









