Them Bones by Carolyn Haines

Them Bones is a light quick read. It is the story of Sarah Booth Delaney whose family home is in deep debt. She resorts to kidnapping her friend's dog for $5000 to help relieve her financial burden. In a comic turn of events, Tinkie, the dog's owner, ends up hiring Sarah Booth to uncover the history of Hamilton the Fifth, an old local flame.
Haines uses Jitty, the ghost of a family maid from the turn-of-the-century, as a foil for Sarah Booth to discuss the details of the case and talk to in general. Jitty is a comedic break and she also allows for more active dialogue in the story rather than relying on Sarah Booth's internal conversations.
Overall, the story is light and an easy read. It is not particularly deep. It's a fun and enjoyable story.