Lady Petra Inquires Books in Order

In Regency London, independently wealthy Lady Petra vows never to marry after losing her fiancé. News of a friend's suspicious death draws her into an investigation of a questionable physician, putting her freedom and safety at risk as she challenges society's expectations.

Lady Petra turns to a royal assignment after troubling revelations about her fiancé's death and her missing lover. Investigating an orphanage matron's murder exposes radical connections and a plot against the monarchy, leaving her little time to protect the girls caught in its path.

A royal baking competition brings Lady Petra to Windsor Castle, where she finds a murdered guest and a familiar servant accused of the crime. An incriminating document and poisoned tea reveal that clearing his name means confronting a killer still among the guests.

Christmas bachelor-auction dances become dangerous when Lady Petra discovers a dead participant and another narrowly escapes harm. While investigating from within the festivities, she also tries to help a boy whose mother has been imprisoned, with both cases threatening her safety.