How does Robert Ludlum do it...especially since he died in 2001?

Fan of the dense, detailed writing style in the 20 novels Robert Ludlum had published before his death in 2001? Curious as to how he's managed to have another 12 bestsellers published since he died?

Check out this article at The Independent to see how an author whose no longer living can still be producing so many thrillers!

What's your favorite Robert Ludlum novel, and why?