The document summarizes the bankruptcy of Lehman Brothers, the largest bankruptcy in history. It provides background on Lehman Brothers and how they grew to become a major global financial firm primarily focused on real estate and mortgage-backed securities. It then describes how Lehman Brothers hid over $50 billion in loans, massively overleveraged themselves, and ultimately went bankrupt during the financial crisis in 2008. Their bankruptcy had massive ripple effects globally and cost millions of people their jobs and investments. Investigations into their accounting practices continued after the bankruptcy.