The Engineer Wore Venetian Red

Book four of the Mysterious Devices series follows Daisy and Freddie Linden as they arrive in San Francisco de Asis seeking their missing father, only to become entangled in a city struck by earthquake and political upheaval. As disasters unfold, they uncover threats to key figures and face dangerous challenges that could plunge the kingdom into chaos. With time running out, the siblings must navigate treacherous circumstances and uncover the truth to save their loved ones and the realm.