The Missing Key: A Falkenburg Castle Mystery

When billionaire Klaus Reinhardt is found dead inside a locked suite at Falkenburg Castle, the police quickly rule the case a suicide. But Preservation Housekeeper Frieda Keller knows something is wrong. While caring for the centuries-old German castle and its priceless artifacts, Frieda has learned that objects rarely lie. A missing key, a vanished photograph, and a detail everyone else overlooks convince her that Reinhardt's death was murder. As she follows a trail of clues through hidden passages, secret rooms, and forgotten records, Frieda uncovers a decades-old inheritance conspiracy dating back to World War II. With suspects hiding dangerous secrets and someone willing to silence anyone who gets too close to the truth, she must rely on her keen eye for detail to expose a killer before history buries the truth forever. A gripping locked-room mystery filled with hidden passages, family secrets, and castle intrigue, The Missing Key introduces Frieda Keller in the first book of the Falkenburg Castle Mysteries.