Standalone novel · 2001
The Sigma Protocol
Ben Hartman, an American banker, sees his brother killed in Switzerland, and uncovers a conspiracy reaching back to the Second World War.
Spoiler-free summary written for The Recurring Cast.
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Book facts
- Author
- Robert Ludlum
- Series
- Standalone
- Published
- 2001
- Setting
- Set around the world
- Characters charted
- 0
- Chart confidence
- High
Who is in The Sigma Protocol
No recurring characters are charted for this book yet.