How did some of the world's biggest tech companies come to benefit from a legal supershield making it almost impossible to sue them? The strange saga of Section 230 began 30 years ago with a notorious penny stock firm later made famous by Hollywood, and has now wound its way to the U.S. Supreme Court.

This week, in a special partnership episode between our Supreme Court podcast The Term and our investigative podcast series Law360 Explores, we track down the story of how a law passed with little fanfare decades ago became an aegis for a fledgling internet industry, and why many critics now want to pierce its armor.