A masked ball. Secret negotiations. And a killer with a few tricks up their sleeve. Mardi Gras, 1936. Though the shores of Lake Como Italy may be calm, intrigue roils beneath the surface of the Marchesa's palatial villa. It's the only time a cat may dance with a king, Harlequin waltzes with Columbina ... and a murderer waits to strike. Ruby and Fina are hoping for...