- The haunted library, the ghost in the attic, by Dori Hillestad Butler ; illustrated by Aurore Damant
- Butler, Dori Hillestad, King & Kayla, bk. 1
- Someone is missing!, by Dori Hillestad Butler ; illustrated by Kevan Atteberry
- The case of the library monster, Dori Hillestad Butler
- Butler, Dori Hillestad, Haunted library, 9
- King & Kayla and the case of the missing dog treats, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- The case of the fire alarm, Dori Hillestad Butler
- Butler, Dori Hillestad, Haunted library, 4
- Butler, Dori Hillestad, Buddy files, bk. 1
- The pet parade, by Dori Hillestad Butler ; illustrated by Kevan Atteberry
- The five o'clock ghost, by Dori Hillestad Butler ; illustrated by Aurore Damant
- Simon sleeps over, by Dori Hillestad Butler ; illustrated by Kevan Atteberry
- King & Kayla and the case of the downstairs ghost, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- King and Kayla and the case of the missing dog treats, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- Butler, Dori Hillestad, Dear Beast, #2
- Butler, Dori Hillestad, King & Kayla, bk. 4
- King & Kayla and the case of the lost tooth, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- Butler, Dori Hillestad, King & Kayla, 10
- Butler, Dori Hillestad, Dear Beast, #4
- Butler, Dori Hillestad, King & Kayla
- The hidden room, by Dori Hillestad Butler ; illustrated by Tim Budgen
- The ghosts at the movie theater, by Dori Hillestad Butler ; illustrated by Aurore Damant
- The haunted library, by Dori Hillestad Butler ; illustrated by Aurore Damant
- The case of the mixed-up mutts, Dori Hillestad Butler
- King and Kayla and the case of the mysterious mouse, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- Butler, Dori Hillestad, Buddy files, bk. 3
- Butler, Dori Hillestad, Buddy files, bk. 5
- Butler, Dori Hillestad, Buddy files, bk. 2
- King & Kayla and the case of the unhappy neighbor, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- Butler, Dori Hillestad, King & Kayla, bk. 3
- The case of the lost boy, Dori Hillestad Butler
- King and Kayla and the case of the secret code, written by Dori Hillestad Butler ; illustrated by Nancy Meyers
- Butler, Dori Hillestad, Buddy files, 6
- Butler, Dori Hillestad, Treasure Troop, 4
- Butler, Dori Hillestad, Dear Beast, #1
- The case of the lost boy, Dori Hillestad Butler ; pictures by Jeremy Tugeau
- The ghost in the tree house, Dori Hillestad Butler
- Mr. Summerling's secret code, by Dori Hillestad Butler ; illustrated by Tim Budgen
- Butler, Dori Hillestad, Treasure Troop, 3
- Butler, Dori Hillestad, Treasure Troop, 2
- The case of the lost boy, Dori Hillestad Butler
- The final treasure, by Dori Hillestad Butler ; illustrated by Tim Budgen
- Butler, Dori Hillestad, Haunted library, 2
- Dear Beast, by Dori Hillestad Butler ; illustrated by Kevan Atteberry
- Butler, Dori Hillestad, King & Kayla, bk. 7
- Butler, Dori Hillestad, Haunted library, 7
- Butler, Dori Hillestad, King & Kayla, bk. 5
- Butler, Dori Hillestad, Dear Beast, #3
- Butler, Dori Hillestad, Treasure Troop, 1
- The case of the missing family, Dori Hillestad Butler