Mr. Monk on the Road (Mr. Monk Series #11)

Adrian Monk is feeling strangely satisfied these days-and he'd like his agoraphobic brother to feel the same way. So he takes Ambrose, against his will, on the open road in a motorhome. Little crimes pop up along the way and Monk can't resist getting involved. Nor can he help sensing a pattern that reveals the hand of a serial killer at work on this highway to hell.