The Gates of Destiny

In their old age, Tommy and Tuppence Beresford became the happy owners of an old house in the village. Along with the property, they inherited some trinkets, including a collection of old books. One day, while sorting through them, Tuppence suddenly noticed the underlined words in Stevenson’s novel "The Black Arrow" that, when combined, could be read as the phrase: "Mary Jordan did not die a natural death"…