A locked room.A secret letter. A weekend to solve a murder.Christmas, 1934.The snow lies heavy around Pauncefort Hall.Fashion-spy-amateur sleuth heroes Ruby and Fina are on a mission to avenge Ruby's family and bring down an empire.After a murderer strikes, an aristocratic family, a princess, a left-wing professor, and a West End starlet are among the top suspects.Ruby and Fina must find the culprit and still carry out their secret plans-all before the law arrives.But Pauncefort Hall can remain snowbound for only so long.If you like Barbara Neely, Rhys Bowen, and G.M. Malliet, then you'll want to pour yourself a warm beverage and nestle down with The Mystery of Ruby's Sugar.