Flash Boys by Michael Lewis is an eye-opening exposé on high-frequency trading (HFT) and its impact on the stock market. Lewis investigates the rise of HFT and the unfair advantages it gives to certain market participants. He follows a group of Wall Street outsiders who set out to level the playing field and create a fairer market. This book sheds light on the hidden world of high-speed trading and raises important questions about the integrity of the financial system.