Spine a bit creased, slightly shelf-cocked.
Tommy and Tuppence Beresford, the engaging detective duo of "N or M?" and of "By the Pricking of my Thumbs", return in their most chilling adventure. It begins with their discovery of an artfully hidden message: Mary Jordan did not die naturally. It was one of us. I think I know which one.
The schoolboy who made this accusation had died long ago, but he and the mysterious Mary Jordan had once lived in the Beresfords' charming old house. And Mary had been killed. By whom and why? The solution to the ancient crim lay behind the Postern of Fate -- a dread gate to violence and murder!"
This was the last book written by Agatha Christie before her death in 1976.; 16mo - over 5¾" - 6¾" tall