Once upon a time, just over a decade ago, David Mitchell was a little-known writer with two novels under his belt. Then, in 2004, he published the science-fiction blockbuster Cloud Atlas. Now he’s an international sensation with an obsessive fan base. Mitchell’s latest book, The Bone Clocks, came out this month and is one of the most anticipated novels of the year. KCRW’s own Bookworm, Michael Silverblatt, joins us to discuss it.