- Blair Slater as Cooper Holmes
- Peter Costigan as Mickey Holmes
- Jennifer Martini as Fergie
- Rena Pauley as Mrs. Holmes
- Paul Miller as Mr. Holmes
- Conrad Dunn as Grimm
- Sam Malkin as Scratch
Differences from the book
- The episode gives a bit of history behind the ghost dogs that was not in the book; they used to be pirates hiding from the law, but they were attacked by dogs and accidentally switched bodies with them before they died. They now haunt the woods looking for humans to switch bodies with them.
- In the episode, Cooper and Fergie are turned back to normal, but Cooper's older brother Mickey is mistakenly transformed into a chipmunk. In the book, Cooper and Fergie are the ones that switch bodies with chipmunks.
- In the episode, the Changing Room is called the Changing Tree.
- Blair Slater (Cooper Holmes) played Dan O'Dell in Season 2's "Night of the Living Dummy III".
- Paul Miller (Mr. Holmes) played Dr. Harold Deep in Season 4's "Deep Trouble".
- Goofs: The small twig in Margaret's hair disappears and reappears randomly, after she and Cooper are pushed into the cave in the ground.