Thank You, Marion

A dead grandmother she barely knew. A house with rooms that don't appear on any blueprint. Broke and freshly divorced, Elise Cottrell drives to rural Carden, South Carolina, planning to sell the property in a week and never look back. Then she hears tapping behind a plastered-over doorway, finds journals written in code, and learns what her grandmother was hiding — and who has been waiting for someone to come looking.