Harry Potter and the Half-Blood Prince, Chapters 6-10

When shopping for school supplies, the students find Draco Malfoy and follow him secretly into a Dark Magic shop where they believe he...

• Hid something he needs to do bad Death Eater stuff

• is working part time to make extra money

• Is trying to hide something from his father to help overthrow Voldemort

• is getting a nice gift for the girl he likes at school

On the train, Harry and many others get special invitations to have lunch with Slughorn the new professor. Then, Harry sneaks into the Slytherin compartment with his cloak to spy on Malfoy and...

• he escapes undetected, but has learned very little.

• he almost gets away with it, but Malfoy catches him at the very end.

• he decides to quit Gryffindor and join Slytherin instead.

• he gets in but leaves right away because he forgot his snacks. Can't spy without snacks. Everyone knows that.

After Tonks rescues Harry from the train situation, they rush to the Welcome Feast and discover some surprising news: Horace Slughorn is actually teaching Potions! The new Defense Against the Dark Arts teacher is...

• Tonks!

• Dumbledore!

• Hagrid!

• Snape!

When Harry borrows and old potions book from Slughorn, he follows directions scribbled in the margins instead of the book and ends up with the best potion in the class! As a reward, Slughorn gives him...

• a bottle of Felix Felicis, liquid luck!

• a bottle of Amortencia, liquid courage!

• a bottle of water, liquid ice!

• a bottle of Polyjuice, liquid math knowledge!

At Harry's first meeting with Dumbledore, they use a Pensieve to watch a memory where Harry sees...

• Voldemort's mother, Merope Marvolo, and Salazar Slytherin's ring, one that Dumbledore has.

• His own childhood with his mother and father.

• Draco Malfoy's father as a child, stealing something that belonged to Salazar Slytherin.

• An excellent old episode of I Love Lucy, a show he and Dumbledore watch when they want to de-stress.