Mark of the plague /
Kevin Sands.
- First Aladdin hardcover edition.
- New York : Aladdin, c2016.
- 529 pages ; 22 cm.
- Blackthorn key ; 2 .
As the plague decimates London in 1665 and an assassin threatens the apothecary's life, apprentice Christopher Rowe and his faithful friend Tom, following a trail of puzzles, riddles, and secrets, risk their lives to untangle the heart of a dark conspiracy.