'Quickly, McDonald gets into his stride... a rattling good read.'

– The Times

'At a stroke, McDonald sums up the attraction of McKinsey to the world’s largest companies, the mystique surrounding its methods, the envy it inspires in competitors and the anger it sometimes incites… a very readable account.'

– Financial Times

‘Is this a good book? Yes. It is meticulously researched, well-written, and comprehensive and balanced. Is it enjoyable? Yes.’

– Management Today

'[An] admiring book that nevertheless asks hard questions about the organization’s future.'

– The Economist

'Thought-provoking… offers a fascinating look behind the company’s success.'

– Andrew Ross Sorkin, New York Times

'An up-to-date, full-blown history, told with wit and clarity…'

– Wall Street Journal

'This is critical reading for anyone who wants to understand how the world of business really works.'

– Bethany McLean, coauthor of the New York Times bestseller All the Devils Are Here

'Revealing… McDonald combines a lucid chronicle of McKinsey’s growth and boardroom melodramas.'

– Publishers Weekly

'Timely.… A fast-paced account of a key business institution, its deeds and misdeeds.'

– Kirkus Reviews

'Fascinating. If you want to know what it is about the culture of the firm that sets it apart and has made it so successful, read this book.'

– Liaquat Ahamed, Pulitzer Prize-winning author of Lords of Finance

'A superb examination of one of the most powerful, secretive, and least understood organizations on the planet.'

– William D. Cohan, bestselling author of Money and Power: How Goldman Sachs Came to Rule the World