Goodreads helps you keep track of books you want to read.
Start by marking “The Sigma Protocol” as Want to Read:
The Sigma Protocol
Enlarge cover
Rate this book
Clear rating
Open Preview

The Sigma Protocol

3.77  ·  Rating details ·  8,712 Ratings  ·  253 Reviews
Now comes The Sigma Protocol, a new breakneck novel of intrigue, conspiracy, and terrifying deception.

American investment banker Ben Hartman arrives in Zurich for a ski holiday, the first time he's been back to Switzerland since his twin brother died there in a tragic accident four years earlier. But his arrival in Zurich triggers something far more sinister than his broth
...more
ebook, 528 pages
Published April 1st 2007 by St. Martin's Press (first published October 30th 2001)
More Details... edit details

Friend Reviews

To see what your friends thought of this book, please sign up.

Reader Q&A

To ask other readers questions about The Sigma Protocol, please sign up.

Be the first to ask a question about The Sigma Protocol

This book is not yet featured on Listopia. Add this book to your favorite list »

Community Reviews

(showing 1-30)
filter  |  sort: default (?)  |  Rating Details
K.D. Absolutely
This is my nth Robert Ludlum book but unlike those that I've so far read, this surprised me the most. Why? It's backdrop is the Holocaust. And for those who know me or those who regularly read my reviews, Holocaust novels have never fail to touch (choose one: grip, wretch, warm) my heart.

What will you do if the Jewish father that you loved all your life and who people respected and pitied because he claimed to be a Holocaust survivor was in fact, a Nazi torturer? And you found out this ugly inco
...more
Tim
Oct 03, 2010 rated it it was ok  ·  review of another edition
Nazis. I hate these guys. —Indiana Jones

Yeah, Ludlum is a famous author. And I loved The Eiger Sanction when I read it as a teenager. I know it's genre fiction, but I love a good escape, so I thought I'd give Robert Ludlum another try.

I suppose it's what it's supposed to be: fast-paced easy reading. But I was expecting more. It's not a total waste; it must have been a lot of work to put together that many pages. But come on, it's just not fair for a guy to get that rich for such basically medioc
...more
Hertzan Chimera
Aug 06, 2008 rated it it was amazing  ·  review of another edition
Recommends it for: readers of crumbling-rope-bridge fiction
Well, though there's a woman (Anna Vavarro) who works for US Intelligence it's not really a spy novel, though there's a wealthy businessman (Ben Hartman) it's not a legal/money laundering novel, though there's a background of international intrigue it's not simply about world domination as those who're following global governmental revelations would expect. It's a simple murder mystery that uses the main themes as a backdrop, nothing else.

But with a catch. Motive. There is none. Until... and it'
...more
Clint Morey
May 27, 2012 rated it really liked it  ·  review of another edition
I first read a Robert Ludlum novel after watching The Bourne Identity movie. I started with the Bourne series of books and was hooked. If you're into thrillers, I would encourage you to read those books.

THE SIGMA PROTOCOL is a stand alone story and has a captivating beginning (as all thrillers should) placing the hero in an untenable position right from the start. From there, things only get worse for the hero. Trying to determine who the good guys and bad guys are is part of the fun for the rea
...more
Anna
Sep 10, 2008 rated it did not like it  ·  review of another edition
Shelves: general-fiction
I didn't care for this Ludlum book as much as other ones. I originally got hooked on Ludlum by reading his Covert-One novels. The Sigma Protocol started out good, grabbing my attention and pulling me in, but I don't think the characters were realistic or compelling. I also found the whole thing to be a bit of a stretch. The biggest conspiracy in the history of the world is just a bit too much for me to swallow.

I will keep reading Ludlum, my next book is the Bourne Identity, I love the movies! I
...more
Karen
Sep 23, 2008 rated it liked it  ·  review of another edition
I have always wanted to read a Robert Ludlum book to see what the fuss was all about. I really enjoyed the "Bourne" movies, but that could have been largely due to Matt Damon. Ludlum has written a ton of books, but my mom lent me this one, so I figured it was the one to try. I did enjoy it. However, I found my experience reading it similar to watching the movies...... I kind of needed my husband or someone with me to explain what was going on sometimes! There are so many characters and so many d ...more
Jenna
Aug 06, 2012 rated it it was amazing  ·  review of another edition
Sigma has been undergoing one final transaction. A change of management. If you have a falling with sigma, then you become a marked man!

Fast-paced, and a very good read. This author never disappoint me, so full of thrill, and action adventure. The story is cleverly plotted! I've learned about poison and different caliber of fire arms.
Ed
Oct 12, 2010 rated it liked it  ·  review of another edition
Recommends it for: Ludlum and adventure thriller fans
Ludlum doesn't mess around with small scale conspiracies. He goes for the over-the-top, take over the world conspiracies. This effort is no different.

In this case, a poor little rich kid, investment banker, Benjamin Hartman, meets up with poor little poor kid made good, Justice Department Agent, Anna Navarro, and, together, they save the world. As in most Ludlum novels, Hartman is an amateur who somehow manages to survive multiple attempts on his life through luck and skills picked up as a child
...more
Geert Daelemans
Such a shame...

While on vacation in Switzerland Ben Hartman, an American investment banker, suddenly stands face to face with his old school friend Jimmy Cavanaugh. They have hardly said hello when without any warning Jimmy pulls a gun on Ben. Thanks to his quick reflexes Ben manages to deflect the assault and kill his attacker. In the meantime, United States Department of Justice Agent Anna Navarro is on the trail of a series of seemingly unrelated deaths. When Anna and Ben's paths cross, they
...more
Kenyon Harbison
A fast-paced, enjoyable, but cookie-cutter and simplistic thriller novel by the author of the "Bourne" series. Two plotlines intertwine, that of Ben Hartman (a handsome, tall, sophisticated, rich financial manager) and Anna Navarro (a smart, beautiful, independent-minded federal agent). Intrigue piles on intrigue. Surprise piles on surprise. Sympathetic supporting characters get killed. The two main characters are very often nearly, but never actually, killed. Etc., etc., etc.... The central con ...more
Judy
Feb 12, 2014 rated it really liked it  ·  review of another edition
Robert Ludlum is a master of the action-packed non-stop adventure novel, although The Sigma Protocol is arguably not one of his best. The plot follows the basic outline of the Bourne trilogy, with Ben being shot at for reasons unknown to him. His search for answers leads him to team up with a woman who is a Department of Justice agent, and the pair careen around Europe, with a short stop in South America, trying to keep their pursuer(s) from killing them. The action makes this a page-turner, but ...more
Ryan Mishap
Nov 14, 2008 rated it really liked it  ·  review of another edition
Shelves: mystery-crime
I won't review all of his books as that would be pointless. These are like TV for me, but that isn't to say some aren't worthwhile. Ludlum successfully transitioned from doing spy books about the commies and the Nazis after the end of the cold war. Who were to be the new villains? Why, corporations of course. These later books usually involved people who weren't super-spies or ex-military, but "ordinary" (rich) guys who stumble on to some plot and have to figure it out while on the run from prof ...more
Arka
Feb 15, 2014 rated it it was ok  ·  review of another edition
Now, here is a conspiracy of epic proportions.

Let us not debate, or wonder, how much research went into the novel, and hence how many iota of probable truths lay embedded deep within the "fiction".

But instead come to the obvious conclusion that an epic conspiracy involves an epic journey written in epic number of pages with epic length of dialogues necessitating epic boredom as an epic ingredient to the enjoyment of this epic.

Action comes only as an expendable change to heighten the epicness.

Eno
...more
Cari
Lame. I am usually a Ludlum fan but thus was drudgery to get through. The characters bumble their way through, constantly walking into danger unprepared, getting tons of people killed because they didn't take reasonable precautions. They let bad guys constantly get the drop on them even tho one is supposed to be a highly trained operative. And for pity sake, a sawed-off shotgun cannot be referred to as a rifle. *eyeroll* Basic weapon knowledge 101.
Tom
Jan 10, 2009 rated it it was ok  ·  review of another edition
I gave 2 1/2 stars to The Sigma Protoco. It was an average who done it, good story but too complicated and unrealistic. I felt like I had read a month in the life of Jack Bauer.
Bill
Dec 12, 2015 rated it liked it  ·  review of another edition
This book was on a list of books that I read before 2005. So, I am adding it to my read books on GoodReads.
Annie
Dec 17, 2012 rated it really liked it  ·  review of another edition
good book! suspense til the last pages and definitely captivates the reader. an excellent thriller by a master writer
Ronna
Dec 30, 2008 rated it liked it  ·  review of another edition
I enjoyed reading this book until the last few pages. I laughed out loud, but I don't think a humorous ending was intended. I just couldn't help myself. All of that build-up for . . . that?!!
B.L. Norris
Jun 10, 2016 rated it really liked it  ·  review of another edition
I happen to love Robert Ludlum and, unsurprisingly, I really liked this one as well. It's a good thrilling ride people.
Alison Smith
Jun 05, 2017 rated it really liked it  ·  review of another edition
Sure, this book's main plot might be a little unbelievable but it is fiction after all. I actually ended up liking this book a lot more than I thought I would, I'm a sucker for any book that involves (either directly or indirectly) the take-down of Nazis. I guess I'm romantic that way.
This book kept me turning the pages quickly and I didn't lose interest which is I think all you can really hope for at the end of the day from a book. This book does jump around from location to location and introd
...more
Karen
Brought together by accident, Ben and Anna soon realize that their only hope of survival lies with each other. Together they race to uncover the diabolical secrets long hidden behind the codeword, Sigma. Secrets that threaten everything they think they know about themselves, everything they believed true about their friends and families, and everything they were ever taught about history itself. For behind Sigma lies a vast deception that is finally coming to fruition and the fate and future of ...more
carl clause
Aug 02, 2017 rated it it was amazing  ·  review of another edition
CC 1

Another fantastic novel. I don't know that Robert Ludlum was such a great story teller. Even though the book was written years ago it still has relevance today. It kept your interest and kept the plot moving. I have decided to go back and read all his stand alone novels. I read the entire Covert - One series and that was also excellent. Ludlum is relevant just as the other great authors I read Daniel Silva, Brad Thor, Kylie Mills ,Lee Child, Vince Flynn and J.B Turner and Diane Capri.
Jenna W
The Sigma Protocol was the first book that I read by Robert Ludlum, and it will probably be the only book I read.

I enjoyed that this book was chalk full of action and conspiracy, but it was a little hard for me to follow. That being said, I have seen all of the Bourne movies, and I feel like this book would make a phenomenal movie!
R.E. Fort
Aug 09, 2017 rated it really liked it  ·  review of another edition
In this review I cover a Robert Ludlum book, The Sigma Protocol. This is such an action packed book with great characters that I found myself not sleeping staying up way to late unable to put it down. For more follow my link at https://www.refort.co/category/book-r...
Penny
Jul 16, 2017 rated it it was ok  ·  review of another edition
Tedious waste of time.
Globehugger
Jun 28, 2017 rated it did not like it  ·  review of another edition
Ugh. As ridiculous and predicable as a Scooby Doo cartoon. I struggled to finish this one.
Hotrats
Mar 22, 2017 rated it it was ok  ·  review of another edition
Formula writing.
VaultOfBooks
Aug 14, 2012 rated it really liked it  ·  review of another edition
By Robert Ludlum. Grade: B+
Robert Ludlum is pitted as one of the best and is known as one the bestselling authors of all time. The Sigma Protocol is credited to Robert Ludlum posthumously and is the last novel written entirely by him.
Ben Hartman is on holiday in Switzerland when he meets one of his oldest childhood friends – who promptly tries to murder him. Hartman has no choice but to kill his attacker in self-defence, and barely survives the ordeal. But when he wakes up, he discovers that the
...more
James Korsmo
Not bad, but not great either.

In The Sigma Protocol, Ludlum puts wealthy financier Ben Hartman and federal agent Anna Navarro on the chase of an elusive world-wide conspiracy. It all begins with a string of seemingly unconnected deaths of men in their eighties. Each death in itself seems normal enough, but there seems to be some connection, and Agent Navarro is enlisted to prove they are in fact murders and to try find the killers. All she is given is a list of names, including a number of the m
...more
« previous 1 3 4 5 6 7 8 9 next »
There are no discussion topics on this book yet. Be the first to start one »
  • The Bourne Betrayal (Jason Bourne, #5)
  • The Ares Decision (Covert-One, #8)
  • Chameleon (Stephanie Patrick #2)
  • The Janson Command (Paul Janson, #2)
  • White Death (NUMA Files, #4)
  • Greed (Matt Browning, #1)
  • Mesmerized
  • Games of State (Tom Clancy's Op-Center, #3)
  • America (Jake Grafton #9)
  • The Man With the Red Tattoo (Raymond Benson's Bond, #6)
  • The Shooters (Presidential Agent, #4)
  • Edge of Danger (Sean Dillon, #9)
5293
Robert Ludlum was the author of twenty-seven novels, each one a New York Times bestseller. There are more than 210 million of his books in print, and they have been translated into thirty-two languages. He is the author of The Scarlatti Inheritance, The Chancellor Manuscript, and the Jason Bourne series--The Bourne Identity, The Bourne Supremacy, and The Bourne Ultimatum--among others. Mr. Ludlum ...more
More about Robert Ludlum...

Share This Book