In reading order
The Princess in Black, Books 1-3
Shannon Hale
The Princess in Black, Books 4-6
Shannon Hale, Dean Hale
The Princess in Black Takes a Vacation, Book #4
Shannon Hale, Dean Hale
The Princess in Black and the Mysterious Playdate
Shannon Hale, Dean Hale
The Princess in Black and the Science Fair Scare
Shannon Hale, Dean Hale
The Princess in Black, Books 7-8
Shannon Hale, Dean Hale
The Princess in Black and the Bathtime Battle
Shannon Hale, Dean Hale
The Princess in Black and the Giant Problem
Shannon Hale, Dean Hale
The Princess in Black, Books 9-10
Shannon Hale, Dean Hale
The Princess in Black and the Mermaid Princess
Shannon Hale, Dean Hale
The Princess in Black and the Prince in Pink
Shannon Hale, Dean Hale
The Princess in Black and the Kitty Catastrophe
Shannon Hale, Dean Hale
The Princess in Black and the Trick-or-Treating Trouble
Shannon Hale, Dean Hale