Desmond Shum, who was raised in Hong Kong, said he didn't understand how to play China's business game until he met his wife, Whitney Duan. They made a fortune together, and as a result she became China's wealthiest female entrepreneur. But when Xi Jinping came to power, Shum saw the writing on the wall for business in China. He and Duan divorced and Shum moved to the UK. In 2017, Duan disappeared. After she went missing, Shum wanted to leave their son his account of what had happened, which led to his tell-all book about doing business in China called "Red Roulette: An Insider's Story of Wealth, Power, Corruption, and Vengeance in Today's China".