A fatal debt - John Gapper

When Ben, a talented British psychiatrist working in New York, first meets Harry, the former chief executive of a failed Wall Street bank, he diagnoses him as suicidally depressed and admits him to hospital. But when pressure is brought by his superiors to discharge Harry, Ben must keep him under observation, and is slowly drawn into the financiers gilded world, where nothing is what it first seems. After a colleague of Harrys dies amid revelations of fraud, Ben realises he has made a terrible error that threatens both his career and his life. A Fatal Debt brilliantly sets a mysterious death amid the fallout of the global financial crisis and the workings of high finance in London and New York.