Gertrude Hieffler's star is rising. Nominated for Best Breakout Investigator of the Year, Gertrude revels in her success but soon discovers life in the spotlight comes with its own unexpected pressures. The stress mounts when an antique locket is stolen - from Gertrude's own home. Determined to track down the necklace and silence her critics, Gertrude finds herself travelling to historic Westumbria, where she hopes uncovering the locket's past will help reveal the identity of the thief. Gertrude is plagued by more than bad press, however, as an unknown enemy plots against her at every turn. So far from home, who will she turn to for help?