This is the sequel to The Potions Master's Daughter and this book covers the time in The Chamber Of Secrets and Prisoner of Azkaban. Jessica is back off to Hogwarts after spending a summer with her father, Severus Snape at Spinner's End and owling with her friends. After stealing the stone from right under Voldemort's nose and at the same time trying to become a Death Eater to work as a spy you'd think she'd get a break. But more challenges are thrown at her and her friends as Sirius Black escapes from Azkaban putting Harry and Severus both on high alert. But even this isn't all that's happening at Hogwarts this year, it seems as though the Chamber of Secrets has been opened one again. Jessica and Severus are planning for the future with Dumbledore as Jessica remains adamant about wanting to be a spy, much to Severus' dismay.