Just picked up "Eruption" - the final Michael Crichton novel. His wife found the unfinished manuscript in his papers, sent it to James Patterson who really enjoyed it and agreed to finish it.
It's... well... it's not very good. Stock characters, disaster premise (monster Hawaiian volcano!), etc. etc. But it moves VERY fast. 419 pages and 109 chapters. On average under 4 pages a chapter.