A fintech startup had a clean story, solid numbers, and a buyer ready to sign—until diligence began and everything got weird. This episode is about what happens when the buyer's lawyers, accountants, and engineers actually look inside your company. Diligence isn't a formality; it's an interrogation. The founders thought they'd done their homework, but diligence uncovered customer concentration risk they'd minimized, a technical debt situation worse than they'd admitted, and some gray-area decisions made early on that now looked problematic. We walk through the diligence request list—financial records, customer contracts, employee agreements, code repositories, compliance documentation—and show how each request is designed to find risk. The M&A advisor explains what diligence actually measures: Can the buyer trust your numbers? Are there hidden liabilities? Will your customers stick around after you're gone? The founder-seller recounts the panic of watching strangers pick apart everything you built, the shame of admitting mistakes, and the negotiation that followed when diligence findings threatened to tank the deal. This is where many deals actually die, and where founders discover that honesty in the sales process is both harder and more important than they expected.