What do the Houston Astros, the Saudi state-owned oil company Aramco, the makers of OxyContin and the Quebec government all have in common? They’ve all hired McKinsey & Company, a prestigious management consulting firm that has been around for nearly a hundred years. It’s a firm with a client list as long and rich as its history and has a lot of power. McKinsey promotes itself as a values-driven organization, but it’s also highly secretive. Today on Front Burner, host Jayme Poisson speaks with Walt Bogdanich and Michael Forsythe, the authors of a new book, called “When McKinsey Comes to Town: The Hidden Influence of the World’s Most Powerful Consulting Firm.”