Agatha Christie publishes By the Pricking of My Thumbs

In the nursing home where Tommy Beresford's aunt Ada now lives, fellow resident Mrs.

Lancaster stirs up worry among those in charge with her bizarre, disjointed ramblings about 'your poor child' and 'something behind the fireplace'. Intrigued, Tommy and his wife Tuppence, who are now in their sixties, conduct an investigation that leads them down some dark and dangerous paths, and possibly into a confrontation with a child killer...