You read the Harry Potter series, now what? Have you listened to the audio books?
The Dark is Rising, Susan Cooper
I can almost garantee that you will adore the narrator, Jim Dale. According to Library School Journal, "Narrator Jim Dale again serves up superbly distinctive characters and adds excitement when he narrates action scenes. Creating more than 200 voices for the Potter series, Dale has not only brought a rich vocal presence to the text, but he's also set an audiobook record for the number of characters portrayed. "
If audio books are not your thing, and you are ready to dig into another series, I would recommend any of the three below. Like Harry Potter, these books are not for young children and are intended for mature readers. I hope that you enjoy my selection.
Underland Chronicles, Suzanne Collins
Fablehaven, Brandon Mull