TY - BOOK AU - Sands,Kevin TI - Mark of the plague T2 - A Blackthorn key adventure SN - 9781481446747 PY - 2016/// CY - New York PB - Aladdin, an imprint of Simon & Schuster Children's Publishing Division KW - Supernatural KW - Fiction KW - Apprentices KW - Juvenile fiction KW - Pharmacists KW - Friendship KW - Secret societies KW - Plague KW - Conspiracies KW - Great Britain KW - History KW - Charles II, 1660-1685 KW - Code and cipher stories KW - Paranormal fiction KW - lcgft KW - Detective and mystery fiction N1 - Includes bibliographical references N2 - 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 ER -