Bonefire of the Vanities (Sarah Booth Delaney Mysteries‪)‬

In this 12th entry in the award-winning series, Carolyn Haines' intrepid PI Sarah Booth comes up against porn-star-turned-psychic Sherry Cameron, who runs a medium business from a haunted estate on the edge of town. After growing suspicious that Sherry might be exploiting her emotionally vulnerable-and extremely wealthy-clients, Sarah disguises herself as a maid and sneaks onto Sherry's estate. But what she discovers there is deadlier than she could have imagined.