Theranos promised to change blood testing by using only a few drops from a patient's finger. Elizabeth Holmes built the company around the idea that a tiny sample could reveal a wide range of health information. That pitch attracted enormous attention and investment, helping the start-up acquire a valuation measured in billions of dollars. The company's claims did not withstand scrutiny, and reports of falsified evidence and misleading demonstrations became central to the collapse. As the fraud case and corporate turmoil mounted, Holmes and the business she had built lost their credibility. The story of Theranos is now largely remembered as a warning about how bold health promises can conceal serious deception.