monster mysteries

Mysteries According to Humphrey - by Betty G Birney (Paperback)

Detective Duck: The Case of the Missing Tadpole (Detective Duck #2) - by Henry Winkler & Lin Oliver (Hardcover)

Enola Holmes: The Case of the Missing Marquess - (Enola Holmes Mystery) by Nancy Springer (Paperback)

Adventure in Grand Canyon National Park - (National Park Mystery) by Aaron Johnson (Paperback)

The Cinderella Ballet Mystery - (Nancy Drew & the Clue Crew) by Carolyn Keene (Paperback)

Danger in Zion National Park - (National Park Mystery) by Aaron Johnson (Paperback)

The Boxcar Children Mysteries Boxed Set Books 1-12 - by Gertrude Chandler Warner (Mixed Media Product)

Discovery in Great Sand Dunes National Park - (National Park Mystery) by Aaron Johnson (Paperback)

The Boxcar Children - (Boxcar Children Mysteries) by Gertrude Chandler Warner (Paperback)

The Feather Chase - (Crime-Solving Cousins Mysteries Book 1) by Shannon L Brown (Paperback)

Encyclopedia Prehistorica Sharks and Other Sea Monsters Pop-Up - by Robert Sabuda & Matthew Reinhart (Hardcover)

Ghostly Park - (The Monster Files) 2nd Edition by A E Stanfill (Paperback)

National Park Mystery Series - Books 1-3 - by Aaron Johnson (Paperback)

The Atlas of Monsters - by Sandra Lawrence (Hardcover)

Nate the Great and the Monster Mess - by Marjorie Weinman Sharmat (Paperback)

Monster Trucks - by Anika Denise

Frances and the Monster - (Frances Stenzel) by Refe Tuma (Hardcover)

Gravity Falls: Dipper's and Mabel's Guide to Mystery and Nonstop Fun! - (Guide to Life) by Rob Renzetti (Hardcover)

Nancy Drew Clue Book Mystery Mayhem Collection Books 1-4 (Boxed Set) - by Carolyn Keene (Paperback)

Ballpark Mysteries: The Dugout Boxed Set (Books 1-4) - by David A Kelly (Mixed Media Product)

The Adventures of Invisible Boy: Monster Mash: A Graphic Novel - by Doogie Horner

Ooze in the Ocean (Spongebob Squarepants Mysteries #2) - by David Lewman

The Mysterious Benedict Society and the Perilous Journey - by Trenton Lee Stewart