Locked inside his office on the 22nd floor of a New York building, René-Thierry Magon de la Villehuchet sliced his arms open and bled into a trashcan to avoid making a mess for the cleaning lady. “He chose the methodology of death that he did, a painful solution to atone for his sins of omission,” says Frank Casey, a financial investor who worked with Villehuchet. “What a waste of a man.” The French investment fund manager had lost $1.5bn of his clients’ money to Bernie Madoff, architect of the biggest Ponzi scheme in American history, who had surrendered to law...