The "Apothecary series" is a collection of historical fiction novels written by Maile Meloy. The series follows the adventures of a young boy named Benjamin Burrows in post-World War II London, who discovers a secret apothecary that specializes in magical potions and remedies. The story combines elements of fantasy and mystery, as Benjamin teams up with a girl named Nell to uncover the secrets of the apothecary and confront various challenges. The series explores themes of friendship, bravery, and the impact of war on society.