The Affair at the Semiramis Hotel Illustrated

A morning visit to Ricardo's London home turns into a test of perception when the shaken Calladine arrives in evening clothes and asks for help. In A. E. W. Mason's The Affair at the Semiramis Hotel Illustrated, he tells Hanaud that he met Joan Carew at a costume ball, watched her become fascinated by a wealthy guest's pearls, and later heard an extraordinary account of a midnight intrusion.

Joan says she used a dropped key to enter the woman's hotel suite, only to encounter thieves already inside. After being seized and losing consciousness, she awoke beside the motionless owner and fled to Calladine. The apparent death, the missing jewels, and Joan's disappearance give the case the shape of a classic locked-room puzzle, yet Hanaud notices details that make the witness himself part of the mystery.

Hidden mescal beans and a porcelain figure resembling Joan introduce the possibility that Calladine's memories were altered or imagined. Mason balances physical clues with questions about suggestion, fear, and unreliable testimony. Ricardo observes Hanaud's disciplined skepticism throughout. Readers drawn to early twentieth-century detective fiction will find a compact investigation in which the truth depends not only on what happened at the Semiramis Hotel, but on whether the story reaching Hanaud can be trusted.