A healing remedy or a deadly poison? Owen Archer confronts a lethal mix of dangerous attraction and troubling secrets when two knights die unexpectedly.

York, 1363. Master apothecary Nicholas Wilton provides a healing potion for a wounded soldier at St. Mary's Abbey.
A KILLER CURE?
When Brother Wulfstan administers the special physick to the pilgrim and a fellow knight, tragedy strikes. Is the poisonous potion an accident, or a deliberate act of murder? Owen is sent to investigate by the Archbishop of York, disguised as an apothecary apprentice assisting Wilton's wife, Lucie.
THE SINS OF A KNIGHT
He soon learns that the first victim, Sir Geoffrey Montaigne, travelled to York to atone a past sin, and had crossed paths with Nicholas before. What was the knight's past misdeed, and what is his connection to the apothecary?
IS FORBIDDEN LOVE A DEADLY DRUG?
Owen uncovers troubling links between the knight and others close to Nicholas - including Lucie, who has captured his heart. But is he falling in love with a killer?
THE OWEN ARCHER MYSTERIES
1. The Apothecary Rose
2. The Lady Chapel
3. The Nun's Tale
4. The King's Bishop
5. The Riddle of St. Leonard's
6. The Gift of Sanctuary
7. A Spy for the Redeemer
8. The Cross-Legged Knight
9. The Guilt of Innocents
10. A Vigil of Spies
11. A Conspiracy of Wolves
12. A Choir of Crows
13. The Riverwoman's Dragon
14. A Fox in the Fold