An old acquaintance of Meredith's hires Magnolia Investigations to look into financial discrepancies at her company. Meredith and Julia call on Julia's forensic accountant nephew Wyatt and together they learn someone has been stealing money from the company. Meanwhile, the friends learn the proper and straight laced Laodicea Oglethorpe was a codebreaker during World War II when she asks them to investigate a threat that could have led to the deaths of her fellow codebreaker friends.