Ch. 244Magic Vision Virus
Tom confronted Snape about the Elixir of Life, but Snape's furious reaction left Tom uncertain about his suspicions. While Tom helped Murphy develop a Magic Vision Virus, Harry proposed investigating Snape by questioning Quirrell in disguise with Polyjuice Potion.
- Tom asked Snape whether he could make the Elixir of Life and whether he wanted to resurrect someone, prompting Snape to accuse Murphy of sending him and leave in a silent fury.
- Tom concluded that Snape possessed the Elixir of Life recipe, though Snape's reaction made him question whether he was the person they were investigating.
- Tom studied spells to protect himself from the notebook's control and helped Murphy train microorganisms for a project to create magical vision.
- Harry told Tom and the others that he had seen Snape threaten Quirrell and try to learn how to get past Quirrell's trap.
- Tom suggested using Polyjuice Potion to disguise themselves as a professor and question Quirrell, and Hermione said she might be able to borrow a bottle.