While investigating the death of an elderly lady, Hetty uncovers a dangerous secret.

Hetty is called on by a pair of worried parents whose deaf-mute son, Malcolm, has disappeared while out bird-watching. Is foul play at hand?

The owners of a Tuscan inn believe their son has been kidnapped by the Mafia and hire Hetty to help get him back.

A letter informs Robert that his Uncle Albert has been found dead from an apparent suicide. Hetty finds the circumstances suspicious and begins to suspect witchcraft was involved.

The elderly sleuth is hired to find a woman's missing son.

The offer of a substantial reward inspires Hetty to find the bright spark behind a spate of arson attacks, and she begins by investigating the activities of a neighbour's foster daughter whose absences from home coincide with the fires.