Do business gurus really hold the secret to success? Peter Drucker, Michael Porter and Gary Hamel are some of those who've found fame and influence via best-selling business books. But can following their lead transform a company - or are they really just selling themselves? Evan Davis and guests assess the pros and cons of buying from the ideas merchants.

GUESTS
Lynda Gratton, professor of management practice, London Business School, CEO The Hot Spots Movement
John Kay, economist, author and consultant
Eddie Obeng, founder and director of Pentacle

Producer: Julie Ball
Editor: Hugh Levinson