Lady Vere Merivale

In the short story Finessing the King/The Gentleman Dressed in Newspaper, Lady Vere Merivale is the wife of Sir Arthur Merivale. After attending the The Three Arts fancy dress ball, Tommy and Tuppence went to the Ace of Spades night club. There they heard a cry from the next booth and went over to investigate. They found Lady Merivale dying after being stabbed with a jewelled knife. With her last breath she told Tuppence that "Bingo did it."