Disappearance at Hangman's Bluff by J. E. Thompson

Abbey and her best friend, Bee, set out to solve another mystery with its roots deep in Southern history in this follow-up to J. E. Thompson's The Girl from Felony Bay. For the first time in a long time, things are looking up for Abbey Force. She lives on Reward Plantation with Bee, and her father has just recovered from his coma. But then their neighbor's dog, Yemassee, is kidnapped, and they are the only witnesses. They decide it's their job to find the men who took him.

This dognapping, though, will lead Abbey and Bee into something much deeper. And before they're through, the girls will once again have to dig through the hidden history of their South Carolina home in order to set things right.