Author Richard Zacks discusses his new book, 'Chasing the Last Laugh: Mark Twain’s Raucous and Redemptive Round-the-World Comedy Tour.'

"Twain was the funniest man in America and it all came crashing down," Zacks tells Publishers Weekly Radio hosts Rose Fox and Mark Rotello. "Twain was the greatest self-promoter....He always wanted something he couldn't have."

Then, PW senior writer Andrew Albanese recaps the recently concluded Google Books copyright case.