MBS is the untold story of how a mysterious young prince emerged from Saudi Arabia's sprawling royal family to overhaul the economy and society of the richest country in the Middle East--and gather as much power as possible into his own hands. Since his father, King Salman, ascended to the throne in 2015, Mohammed bin Salman has leveraged his influence to restructure the kingdom's economy, loosen its strict Islamic social codes, and confront its enemies around the region, especially Iran. That vision won him fans at home and on Wall Street, in Silicon Valley, in Hollywood, and at the White House, where President Trump embraced the prince as a key player in his own vision for the Middle East. But over time, the sheen of the visionary young reformer has become tarnished, leaving many struggling to determine whether MBS is in fact a rising dictator whose inexperience and rash decisions are destabilizing the world's most volatile region.