Miss Peregrine understands that even though her children are safe, they're still curious to explore elsewhere. The more you hear about amazing things outside of where you live, the more you want to leave home, no matter how nice it is.

This narcotic effect is interesting, and not really explored beyond this sentence. Is it the safety and serenity of the place that is intoxicating, or is there an actual magical spell on the place to make Jacob want to stay?

Jacob never felt at home in Florida (because he's not ninety years old), so it's not surprising that he wants to stay in a place where he fits in with kids his age… or ninety-year-olds who at least look his age.

Jacob doesn't seem to have any guilt or hesitation about betraying Emma's trust and looking into her private things. Why is that? Does he feel entitled to any information about his grandfather, or does he not quite see her as a real person with real feelings?

Here's the reason Grandpa spent his life fighting monsters: It's a combination of bravery and honor at the core of his personality.

Jacob's identity as Abe's grandson isn't normally an issue, but it is with Emma because she was in a relationship with Abe. Jacob can't figure out if Emma likes him for who he is, or because he looks like his grandpa (but without the wrinkles).

Jacob shows a surprising level of empathy for his father. But teenagers know better than anyone how important it is to define your identity at an early age… that way you don't end up like Jacob's dad.