Lou Dobbs, for 20 years the anchor and managing editor of the CNN financial show Lou Dobbs Moneyline, has signed with Doubleday to publish a book on his perspectives on the financial scene, current economic trends and the many business leaders he has interviewed. Roger Scholl, executive editor of the house's Currency imprint, which will publish the as yet untitled book next fall, bought it from agent Wayne S. Kabak at William Morris. He purchased North American rights plus first serial, audio and e-book.