| Original Language | English |
| First published | 2001 |
| Links | https://en.wikipedia.org/wiki/The_Sigma_Protocol |
| Notes | The Sigma Protocol is the last novel written completely by Robert Ludlum, and was published posthumously. It is the story of the son of a Holocaust survivor who gets entangled in an international conspiracy by industrialists and financiers to take advantage of wartime technology. |
Editions 1
Add Edition| Title | Publisher | Format | Language | Location | Dates | Impression | |
|---|---|---|---|---|---|---|---|
 | The Sigma Protocol | Orion | Paperback | English | UK | 2001 | 4th |
Added by Supernaut1970