They do it with mirrors
Agatha Christie
Miss Marple (6)
Veiled Threats
Deborah Donnelly
Carnegie Kincaid (1)
Our Little Secret
Starr Ambrose
Eleven Minutes
Paulo Coelho
The horse and his boy
C. S. Lewis
Chronicles of Narnia: Chronological order (3)
The magician's nephew
Chronicles of Narnia: Chronological order (1)
The silver chair
Chronicles of Narnia: Chronological order (6)
The voyage of the Dawn Treader
Chronicles of Narnia: Chronological order (5)
Wintersmith
Terry Pratchett
Discworld: Young Adult (4)
Fablehaven: Rise of the Evening Star
Brandon Mull
Fablehaven (2)
The road to Oz
Lyman Frank Baum
Oz : Famous Forty (5)
Dorothy and the Wizard in Oz
Oz : Famous Forty (4)
The Emerald City of Oz
Oz : Famous Forty (6)
The Basilisk's Lair (Nathaniel Fludd, Beastologist, Book 2)
R. L. LaFevers
Nathaniel Fludd, Beastologist (2)
Theodosia and the Eyes of Horus
Theodosia (3)
Grey Griffins: The Clockwork Chronicles #1: The Brimstone Key
Derek Benz & Jon S. Lewis
Divided Souls
Gabriella Poole
Where the Mountain Meets the Moon
Grace Lin
The Tales of Beedle the Bard
J. K. Rowling