Vampires

Percy Jackson and the Lightning Thief (Book 1)

Percy Jackson and the Sea of Monsters (Book 2)

Percy Jackson and the Titan's Curse (Book 3)

The Witches

Hotel Valhalla Guide to the Norse Worlds: Your Introduction to Deities, Mythical Beings & Fantastic Creatures

Darke: Septimus Heap Book 6, Book 6

Percy Jackson and the Olympians: Wrath of the Triple Goddess

The Legend of Tutankhamun

Which Witch?

Fyre: Septimus Heap book 7: Book 7

Not Just a Witch

Where Is Area 51?

Witch Switch

Seymour Simon's Extreme Earth Records

Haunted Canada 4: More True Tales of Terror