The Assize of the Dying — Ellis Peters

A perfect pair of crimes...
When Louis Stevenson is found guilty of murder, he leaves the dock loudly proclaiming his innocence. And he delivers, too, a chilling invitation to the four men responsible for his conviction: ‘You four, I summon to meet me at the time appointed, at the Assize of the Dying.'

The meaning of the sinister words becomes clear almost immediately with two unexpected deaths. And a young couple, convinced that an innocent man has been wrongly condemned, determined to unmask the real murderer -- before he strikes again…

Murder is committed, too, in ‘Aunt Helen', a story of blind obsession and psychological suspense that starts with what looks suspiciously like the perfect crime .. .