Tommy and Tuppence decide to go to a fancy dress ball after reading what they interpret as a coded message in the personals column of the newspaper. What they find is a dead woman, stabbed in the chest. The woman is identified as Lady Vere Merivale, a well-known socialite. Inspector Marriott arrests Captain Bingo Hale, Lady Merivale's lover, but the Beresfords believe him to be innocent.
Did You Know?
Are men really so stupid as to have affairs with their best friends' wives?