Of the writing of books on Hollywood there has been no end. The only one that has maintained its permanence as a document and a dramatic revelation of the drives, hopes and frustrations of the film colony is What Makes Sammy Run? Budd Schulberg's chronicle of the shady opportunist in the land of flickering shadows has become part of the established folklore of America. The question in his title has been incorporated into our common language and the name of Sammy Glick has become the accepted symbol for the aggressive and ruthless hustler and careerist. For the Modern Library edition of What Makes Sammy Run? the author contributes a new and illuminating introduction.