For the past 2 months, Lliam and I have slowly been working our way through Harry Potter and the Sorcerer's Stone, 3 or 4 pages for a few bedtimes per week. It's not always clear whether Lliam is giving the story his full attention because he sometimes plays with his Hot Wheels or toy-du-jour while I'm reading.
Every now and then, he interrupts the story with a flood of questions.
Why is Dudley so mean to Harry?
Can Hagrid do magic?
How does Professor McGonagall change into a cat?
Are these real people, or just pretend?
He is particularly intrigued by the darker parts of the story:
How did Voldemort give Harry the scar?
How did he kill Harry's parents?
Fast forward to Harry's first Quidditch match. There is a scene where Hermione knocks over Quirrell on her way to stop Snape from cursing Harry's broom. Quirrell, up to this point, is rarely mentioned in the story. In fact, he probably hasn't been mentioned for at least 50 pages, and at the rate we're reading, that is weeks ago.
With perfect clarity, Lliam interrupts me mid-sentence to remind me that "when Quirrell met Harry, he had a hard time speaking and went s-s-s a lot." Lliam was referring to a scene early on in the book when Hagrid took Harry to the Leaky Cauldron for the very first time, and all the barflies, including Quirrell, were in awe of Harry. He also remembered that Quirrell had a stutter.
Clearly I don't have to worry about whether Lliam is paying attention.