The Fear Index is a 2011 book written by Robert Harris.

Taking place over the course of a single day we follow the story of Dr Alex Hoffmann, an American owner of a multi-billion dollar hedge fund company currently living in Geneva. He's on the verge of creating a powerful automated algorithmic system which will manage the hedge fund, making the company billions. However the night before investors are allowed to see the new system Alex's once ordered life starts to unravel.

It all started innocently enough; a mysterious rare first edition copy of Charles Darwin's The Expression of Emotions in Man and Animals appears through the post. However later that evening an intruder breaks into his house, knocks him unconscious and things unravel from there.

Note that due to the very nature of the book it's rather hard to discuss many aspects without ruining it. You have been warned.

Provides Examples of the Following Tropes;

• A.I. Is a Crapshoot: Alex at the end sees the whole book a form of experiment, however its more likely VIXAL-4 was just trying to get rid of the only man that could possibly predict what was going on.
• Asshole Victim: Lets face it Hoffmann starts out like this. He's a multi-billionaire hedge fund manager (which most people will just translate as "banker") who comes off cold and uncaring to everybody. He does soften, slightly, as the book advances.
• Be as Unhelpful as Possible: Quarry, but that's just because he's trying to protect the money making algorithm.
• Clueless Chick Magnet: Hoffmann.
• Despair Event Horizon
• Big Fancy House: Hoffmann's house which costs sixty million dollars.
• Everything Is an iPod in the Future: Hoffmann Investment Technologies is described like this. Everything is handled on computers and sleek computer devices; to the point where having anything paper is against company policy.
• Everything Is Online
• Facial Recognition Software: Used as a security measure to get in and out of Hoffmann Investment Technologies. Funnily enough it requires the person to show no emotion.
• Gaslighting: Which slowly makes Hoffmann completely unhinged by the end.
• Inspector Javert
• The Killer Becomes the Killed: The man that broke into Hoffmann's house.
• Never Suicide
• No-Paper Future: Enforced in universe. However Hoffmann himself collects rare books. And of course all the money in the book is dealt with electronically.
• Not With Them For The Money: Gabriel who is actually getting a bit sick of all the money.
• Piecemeal Funds Transfer: Averted, as you would expect from a book focused around instantaneous trading.
• Ripped from the Headlines: The stock flux at the end of the book actually happened.
• Shout-Out: The story takes place in Geneva, the original home town of Doctor Frankenstein
• Sinister Surveillance: Alex discovers this near the end of the book. Gabriel sees this and gets the wrong idea.
• Spot of Tea: Joked with where Leclerc says he better have tea in an interview with Quarry.
• Twenty Minutes into the Past: Set on the 6th of May 2010.
• You Have to Believe Me