He ran creative for the world's biggest advertising group. Then his own recommendation to the board cost him the job, and he sold every share he owned the same week. In this episode, John O'Keeffe explains how he took WPP from a "creative desert" to seven straight years as Creative Holding Company of the Decade, why recommending Mark Read to succeed Martin Sorrell as CEO turned out to be his biggest mistake, and what happened when Read undercut him in front of the entire company. He also make...