22. Lord Peter isn't making any progress in his attempts to romance Harriet, but Lady Mary Wimsey, Peter's sister, may have finally found true love. Which seemingly"unsuitable" gentleman is the object of her affections?
From Quiz Peter & Harriet: "Strong Poison" Pt. 3-Progress
Answer:
Charles Parker
Lady Mary had had rather a tempestuous romantic life. Two of the incorrect answers (Cathcart and Goyles) are the names of men with whom she had been involved in the past. The details of those events are recounted in "Clouds of Witness," during which Gerald, Duke of Denver (Peter's older brother) is on trial for the murder of Denis Cathcart. Chief Inspector Charles Parker is a fine man who fell for Lady Mary during that case, but has been deeply reluctant to pursue the relationship because the idea of a police officer and a member of the nobility marrying seems impossible. Peter, however, highly approves and, at his sister's request, convinces Charles to propose. Lady Mary is elated, and the engagement is a fait accompli, though she is keenly aware her brother, the Duke, will be furious.