- The secret room, by Dori Hillestad Butler ; illustrated by Aurore Damant
- King & Kayla and the case of the gold ring, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- The five o'clock ghost, by Dori Hillestad Butler ; illustrated by Aurore Damant
- King and Kayla and the case of the missing dog treats, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- King & Kayla and the case of the mysterious mouse, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- The ghost backstage, by Dori Hillestad Butler ; illustrated by Aurore Damant
- King and Kayla and the case of the secret code, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- The ghost in the attic, by Dori Hillestad Butler ; illustrated by Aurore Damant
- The haunted library, by Dori Hillestad Butler ; illustrated by Aurore Damant
- King & Kayla and the case of the lost library book, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- King & Kayla and the case of the missing dog treats, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- The ghost at the fire station, by Dori Hillestad Butler ; illustrated by Aurore Damant