unsolved mysteries

Mysteries of Marine Mammals - by Amandine Delaunay (Hardcover)

A Summer Secret - (Mysteries of Middlefield) by Kathleen Fuller (Paperback)

The Powwow Thief (the Powwow Mystery Series, Book #1) - by Joseph Bruchac (Hardcover)

The Mystery of the Green Star - by David Bentley Hart & Patrick Robert Hart

The Magic and Mystery of Earth - (The Magic and Mystery of the Natural World) by Jason Bittel (Hardcover)

Cream Buns and Crime - (A Murder Most Unladylike Mystery) by Robin Stevens

A Skeleton in the Closet - (The Mizzy Mysteries) by Claire Hatcher-Smith

The Mystery of Blackbeard the Pirate - (Real Kids! Real Places! (Paperback)) by Carole Marsh (Paperback)

Cambree's Adventure on the Mysterious Path - by Jacquelyn Loreta-Rinearson (Hardcover)

Erwin, Gato Cuántico. Misterio a Través del Tiempo (1) / Erwin, Quantum Cat. Mystery Through Time (1) - (Erwin, El Gato Cuántico) by Manuel Bartual

Capital Mysteries #1: Who Cloned the President? - by Ron Roy (Paperback)

Jigsaw Jones: The Case of the Bear Scare - (Jigsaw Jones Mysteries) by James Preller (Paperback)

Pyramids of Egypt (Unsolved) - by Dinah Williams

A to Z Mysteries Super Edition #10 - by Ron Roy (Paperback)

The Ghost and Mrs. Hobbs - (Ghost Mysteries) by Cynthia C DeFelice (Paperback)

Mystery of the Egyptian Scroll - (Kid Detective Zet) by Scott Peters (Paperback)

Asesinato En Primera Clase / Murder in First Class - (Cozy Mystery Juvenil) by Robin Stevens (Hardcover)

Mystery of the Silver Coins - (Viking Quest) by Lois Walfrid Johnson (Paperback)

The Happy Hollisters and the Monster Mystery - by Jerry West

The Quicksand Question - (A to Z Mysteries) by Ron Roy (Paperback)

Really Truly - (Pumpkin Falls Mystery) by Heather Vogel Frederick (Paperback)

CAM Jansen: CAM Jansen and the Summer Camp Mysteries - (Cam Jansen) by David A Adler (Paperback)

The Mystery of the Television Dog - (Cam Jansen) by David A Adler (Paperback)

Myrtle, Means, and Opportunity (Myrtle Hardcastle Mystery 5) - (A Myrtle Hardcastle Mystery) by Elizabeth C Bunce (Paperback)