Green Water Ghost — Glynn Marsh Alam

It's Halloween in the north Florida woods and Luanne Fogarty finds brand-new bones along with the old in an abandoned slave graveyard. An antebellum discord simmers into the present day and Luanne's college students are up to ghoulish tricks. She dives in slime-covered ponds and navigates folk legends with the help of forensics. The Southern past rarely stays buried long in the swamp. This is the sixth in the Luanne Fogarty series of spine-tingling swamp noir mysteries set in the springs and underwater caves of northern Florida where Luanne, a linguistics professor, serves as adjunct scuba diver for the sheriff's department.