book cover of The Sigma Protocol
Added by 50 of our members

The Sigma Protocol

(2001)
A novel by

 
 
American investment banker Ben Hartman, son of legendary Max Hartman, who built a financial empire up from next to nothing, is on holiday in Switzerland when he meets a childhood friend who promptly tries to kill him. Ben narrowly survives the attempt, and when he wakes up he discovers that the body and all evidence of the confrontation has disappeared. But this is only the beginning... Anna Navarro, a US government agent, is sent to look into a string of deaths of old men 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 the future of Hartman and Navarro is at stake, but that of the world...

Genre: Thriller

Similar books by other authors

thumb
The Utopia Experiment
(Covert-One, book 10)
Kyle Mills
thumb
The Bourne Evolution
(Jason Bourne, book 15)
Brian Freeman

Used availability for Robert Ludlum's The Sigma Protocol

Hardback Editions

April 2002 : USA Hardback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-7862-3888-7 / 978-0-7862-3888-0 (USA edition)
Publisher: Thorndike Pr
Availability: Amazon   Amazon UK   


March 2002 : UK Hardback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-7531-6652-6 / 978-0-7531-6652-9 (UK edition)
Publisher: ISIS Publishing
Availability: Amazon   Amazon UK   Amazon CA   


2002 : Hardback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
Publisher: Book Club Associates
Availability: Amazon UK   


November 2001 : UK Hardback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-7528-4178-5 / 978-0-7528-4178-6 (UK edition)
Publisher: Orion
Availability: Amazon   Amazon UK   Amazon AU   


October 2001 : USA Hardback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-312-27688-5 / 978-0-312-27688-1 (USA edition)
Publisher: St. Martin's Press
Availability: Amazon   Amazon UK   Amazon CA   


Paperback Editions

June 2017 : USA Mass Market Paperback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 1-250-14151-6 / 978-1-250-14151-4 (USA edition)
Publisher: St. Martin's Paperbacks
Availability: Amazon   Amazon UK   Amazon CA   Amazon AU   


December 2011 : UK Paperback
thumb

Title: SIGMA Protocol Film Tie in
Author(s): Robert Ludlum
ISBN: 1-4091-1973-4 / 978-1-4091-1973-9 (UK edition)
Publisher: Orion Paperbacks
Availability: Amazon   Amazon UK   Amazon CA   


February 2010 : UK Paperback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 1-4091-1776-6 / 978-1-4091-1776-6 (UK edition)
Publisher: Orion
Availability: Amazon   Amazon UK   Amazon AU   


March 2009 : USA Mass Market Paperback
thumb

Title: The Sigma Protocol: A Novel
Author(s): Robert Ludlum
ISBN: 0-312-94358-X / 978-0-312-94358-5 (USA edition)
Publisher: St. Martin's Paperbacks
Availability: Amazon   Amazon UK   Amazon CA   


2009 : Paperback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
Publisher: St Martins Pr
Availability: Amazon   


June 2007 : USA Paperback
thumb

Title: Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-312-33701-9 / 978-0-312-33701-8 (USA edition)
Publisher: St. Martin's Paperbacks
Availability: Amazon   Amazon UK   Amazon CA   


September 2003 : USA Paperback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-7862-3893-3 / 978-0-7862-3893-4 (USA edition)
Publisher: Thorndike Press
Availability: Amazon   Amazon UK   


December 2002 : UK Paperback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-7531-6653-4 / 978-0-7531-6653-6 (UK edition)
Publisher: ISIS Publishing
Availability: Amazon   Amazon UK   Amazon CA   


October 2002 : USA Mass Market Paperback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-312-98251-8 / 978-0-312-98251-5 (USA edition)
Publisher: St. Martin's Paperbacks
Availability: Amazon   Amazon UK   Amazon CA   


August 2002 : UK Paperback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-7528-4813-5 / 978-0-7528-4813-6 (UK edition)
Publisher: Orion Books Ltd.
Availability: Amazon   Amazon UK   Amazon CA   


April 2002 : USA Paperback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-312-98452-9 / 978-0-312-98452-6 (USA edition)
Publisher: St Martins Pr
Availability: Amazon   Amazon UK   Amazon CA   


December 2001 : UK Paperback
thumb

Title: The Sigma Protocol
Author(s): Ludlum Robert
ISBN: 0-7528-4189-0 / 978-0-7528-4189-2 (UK edition)
Publisher: Great Britain
Availability: Amazon   Amazon UK   Amazon CA   


1900 : UK Paperback
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 0-7528-4878-X / 978-0-7528-4878-5 (UK edition)
Publisher: London
Availability: Amazon   


Audio Editions

January 2016 : USA Audio CD
thumb

Title: The Sigma Protocol: A Novel
Author(s): Robert Ludlum
ISBN: 1-4272-7777-X / 978-1-4272-7777-0 (USA edition)
Publisher: Macmillan Audio
Availability: Amazon   Amazon UK   Amazon CA   Amazon AU   


July 2008 : USA Audio CD
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 1-4272-0486-1 / 978-1-4272-0486-8 (USA edition)
Publisher: Macmillan Audio
Availability: Amazon   Amazon UK   Amazon CA   Amazon AU   


October 2006 : UK Audio CD

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 1-84559-601-3 / 978-1-84559-601-9 (UK edition)
Publisher: Soundings Audio Books
Availability: Amazon UK   Amazon CA   


September 2004 : USA Audio edition
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
Publisher: Macmillan Audio
Availability: Amazon   


February 2002 : UK Audio Cassette

Title: The Sigma Protocol: Complete & Unabridged
Author(s): Robert Ludlum
ISBN: 1-84283-204-2 / 978-1-84283-204-2 (UK edition)
Publisher: Soundings Ltd
Availability: Amazon UK   Amazon CA   


November 2001 : USA Audio Cassette
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 1-55927-686-X / 978-1-55927-686-3 (USA edition)
Publisher: Macmillan Audio
Availability: Amazon   Amazon UK   Amazon CA   


November 2001 : USA Audio Cassette
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 1-55927-688-6 / 978-1-55927-688-7 (USA edition)
Publisher: Macmillan Audio
Availability: Amazon   Amazon UK   Amazon CA   


November 2001 : USA Audio CD
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 1-55927-687-8 / 978-1-55927-687-0 (USA edition)
Publisher: Macmillan Audio
Availability: Amazon   Amazon UK   Amazon CA   


October 2001 : USA Audio edition
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
Publisher: Macmillan Audio
Availability: Amazon   


October 2001 : USA Audio Cassette
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum, Michael Prichard
ISBN: 0-7366-8375-5 / 978-0-7366-8375-3 (USA edition)
Publisher: Books on Tape
Availability: Amazon   Amazon CA   


October 2001 : USA Audio Cassette
thumb

Title: The Sigma Protocol
Author(s): Sue Miller, Michael Prichard
ISBN: 0-7366-8076-4 / 978-0-7366-8076-9 (USA edition)
Publisher: Books on Tape
Availability: Amazon   Amazon UK   Amazon CA   Amazon AU   


2001 : USA Audio Cassette

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 1-4025-0784-4 / 978-1-4025-0784-7 (USA edition)
Publisher: Macmillan Audio
Availability: Amazon   


2001 : USA Audio CD
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
ISBN: 1-4025-2076-X / 978-1-4025-2076-1 (USA edition)
Publisher: Recorded Books
Availability: Amazon   


Kindle Editions

December 2009 : Australia, UK Kindle edition
thumb

Title: The Sigma Protocol
Author(s): Robert Ludlum
Publisher: Orion
Availability: Amazon UK   Amazon AU   


April 2007 : USA, Canada Kindle edition
thumb

Title: The Sigma Protocol: A Novel
Author(s): Robert Ludlum
Publisher: St. Martin's Press
Availability: Amazon   Amazon CA