Ruben moves to a new town where he encounters strange characters at school.

Ghostwriter releases Mowgli from The Jungle Book to help find Grandma’s missing cat.

Mowgli goes missing and the kids have to work with Bagheera to get him home safely.

A cowboy is released into the world to help find a secret letter with a Ghostwriter clue.

A marshal looking for the cowboy seeks help, but the kids don’t know who to trust.

The kids discover what the mysterious key opens, with help from an unlikely source.

When the kids partner with Raine to dig into Grandma's memories, they make a surprising discovery.

Wondering if Grandma’s “unfinished business” involves an old friend, Ruben and Raine track down Sofia to see if she's ”S”.

The kids find a sparkle memory of the bookstore’s opening day, revealing more secrets that Ruben’s grandma kept from his grandpa.

Just as the kids are hitting a dead end in the mystery, Ghostwriter takes things to the next level by releasing characters from Frankenstein.

Things don't go as expected when the kids attempt to build a new creature to appease Frankenstein's monster.

It's up to the kids to save the day when it turns out the new monster is not only heartless, but visible to everyone.