- Wakestone Hall (Stella Montgomery, #3)
- Walter, Don't Scare The Monster
- Warren the 13th and The All-Seeing Eye
- Warren the 13th and the Thirteen-Year Curse
- Warren the 13th and the Whispering Woods
- Watergirl
- We're All Mad Here
- We're Going on a Goon Hunt
- Welcome to Doom Farms
- Welcome to Monster Town
- Welcome To Ravenwood
- Werewolf Fever: A 15-Minute Horror Story, Educational Version
- Werewolf Stories to Tell in the Dark
- What To Do About Your Monsters
- What's a Monster?
- When a Ghost Talks, Listen
- When a Monster Moves into Your Washing Machine
- When an Alien Meets a Swamp Monster
- When I’m a Monster Like You, Dad
- When Snow Men Attack
- When the Night-gaunt Knows Your Name
- Where Fairies Dwell
- Where the Woods End
- Whispering Graves
- White Feathers Academy
- Who Let the Ghosts Out?
- Who Wants I Scream?
- Wicked Wizards and Leaping Lizards
- Wild Child
- Wild Robert
- Wilfred
- Wilkołak
- Wilfred
- Wilkołak
- Will You Be My Friend?
- Willakaville: Amazing Adventures of Astronomical Awesomeness
- Willakaville: Baffling Ballads of Boisterous Braveness
- Willakaville: Cataclysmic Chronicles of Caustic Calamity
- Winter at Bear Cottage
- Wishin' on the Moon
- Witch Twins and the Ghost of Glenn Bly
- Witch Week
- Witch's Magic
- Withering-by-Sea (Stella Montgomery, #1)
- Wolf Island
- Working Mummies
- Worlds Explode