Investigative journalism uncovers hidden truths, exposing corruption and holding power accountable. From muckraking in the early 20th century to modern data-driven reporting, it has shaped public opinion and policy through in-depth research and fact-checking. This form of reporting faces ethical challenges, legal threats, and financial pressures. Yet it remains crucial for democracy, adapting to the digital age with collaborative investigations, nonprofit newsrooms, and new storytelling formats to combat misinformation and serve the public interest.