The Spider Network: The Wild Story of a Math Genius, a Gang of Backstabbing Bankers, and One of the Greatest Scams in Financial History

by David Enrich

Quick Summary

The dramatic true story of Tom Hayes, the UBS and Citigroup trader at the center of the LIBOR rate-rigging scandal, and the vast network of traders, brokers, and bankers who manipulated the world's most important benchmark interest rate. Enrich traces the scheme from its origins through prosecution, revealing systemic corruption across the global banking industry.

Detailed Summary

David Enrich, an investigative journalist, delivers a meticulously researched narrative of the LIBOR (London Interbank Offered Rate) manipulation scandal, one of the largest financial frauds in history. The story centers on Tom Hayes, a mathematically gifted but socially awkward trader who worked at Royal Bank of Scotland, UBS, and Citigroup, and who became the first individual convicted of rigging LIBOR.

The book is structured in four parts. Part I, "The Scam," introduces Hayes's early career and his discovery that LIBOR -- the benchmark interest rate underpinning over $350 trillion in financial contracts globally -- could be influenced through coordinated pressure on bank submitters. LIBOR was supposed to reflect the rate at which banks could borrow from each other, but in practice, the submitters had enormous discretion and little oversight, creating a vulnerability that Hayes and others exploited systematically.

Part II, "Ascendance," traces the expansion of the manipulation network. Hayes built an elaborate web of relationships spanning multiple banks and interdealer brokers, including ICAP, RP Martin, and Tullett Prebon. Brokers like Darrell Read, Colin Goodman (whose daily "runthroughs" influenced market expectations), Terry Farr, and Noel Cryan served as intermediaries who could pressure LIBOR submitters at various banks. The cast includes dozens of traders and managers across RBS, UBS, Citigroup, Deutsche Bank, Barclays, HSBC, J.P. Morgan, Rabobank, Bank of America Merrill Lynch, and Credit Suisse, revealing that LIBOR manipulation was not an isolated incident but a systemic practice across the global banking industry.

Part III, "The Second Scam," details how the crisis deepened when, during the 2008 financial crisis, banks began systematically submitting artificially low LIBOR rates to disguise their true borrowing costs and avoid appearing financially distressed. This was a different form of manipulation from Hayes's profit-motivated rigging but involved far more senior bank executives and was arguably more damaging to market integrity.

Part IV, "Victory," covers the regulatory investigations by the U.S. Commodity Futures Trading Commission (CFTC), the U.S. Justice Department, and UK authorities, leading to billions of dollars in fines against major banks and criminal prosecutions. Hayes became the central figure in the prosecution, receiving a 14-year sentence (later reduced to 11 years), while many of his co-conspirators cooperated with authorities or escaped prosecution entirely.

Enrich weaves together the personal drama of Hayes's life -- his relationship with lawyer Sarah Tighe, his evident traits of autism spectrum disorder, his family dynamics -- with the broader systemic failures in financial regulation. The book raises profound questions about individual versus institutional culpability: Hayes was scapegoated for practices that were widely known and tolerated, if not encouraged, by bank management. The title "Spider Network" refers both to Hayes's web of co-conspirators and to the broader interconnected system that enabled the fraud.