O is for Outlaw (Kinsey Millhone 15)

The call comes on a Monday morning from a guy who scavenges defaulted storage units at auction. Last week he bought a stack. They had stuff in them--Kinsey stuff. For thirty bucks, he'll sell her the lot. Kinsey's never been one for personal possessions, but curiosity wins out and she hands over a twenty (she may be curious but she loves a bargain). What she finds amid childhood memorabilia is an old undelivered letter.