In that case, they needed to carefully study the characteristics of werewolves. Only, Severus hadn't expected that in Hogwarts, reputed to be the safest place in the wizarding world, more than one werewolf had managed to sneak in. Severus cast a meaningful look at Camelia.
Camelia returned an innocent look, successfully making Severus frown and shift his gaze away in speechlessness.
Once the other werewolf was found, perhaps they could use that to threaten him into cooperating with their potion experiments. However, Camelia had also been included in the scope of the experiment, because Severus was not content with merely creating the fox-wolf potion. Upon learning that Camelia possessed fox-wolf blood, he had begun studying the already-invented Wolfsbane Potion.
Chapter 63