The Casey Grimes Series: The Mostly Invisible Boy, Trickery School, Crooked Castle, The Ghost of CreepCat, Into Thin Air & The Pencil Killer. This item is unavailable.The Casey Grimes Series: The Mostly Invisible Boy, Trickery School, Crooked Castle, The Ghost of CreepCat, Into Thin Air & The Pencil Killer

Three full-length novels, a novella and two short stories in one volume! This 6-in-1 collection is packed with adventure, courage, and of course, monsters.

The Mostly Invisible Boy (Casey Grimes #1)

Casey Grimes thinks his invisibility is permanent until he finds a secret forest society in charge of monster control. Now he’s got a chance to belong—if he can stay alive long enough.

Trickery School (Casey Grimes #2)

Monster-control academy starts for Casey & Gloria, but there's one little problem: A secret enemy who's playing for keeps.

Crooked Castle (Casey Grimes #2.5)

When Brook, an orphan with a knack for survival, is dumped on a deadly island—by a beast that shouldn’t exist—all she knows is she’s far from her group home in Weed, California. And haunted by a past that stays just out of reach.

The Ghost of CreepCat (Novella)

When Lila Banks takes a hike, she doesn't expect to be stalked by the ghost of her recently-deceased cat.

Into Thin Air (Short Story)

This funny, surprising tale featuring a Casey Grimes character was cowritten by my fifteen-year-old son, Aidan—and me, AJ.

The Pencil Killer (Short Story)

This humorous short story with a twist features another Casey Grimes character. It was written with my thirteen-year-old son, Asher. (Fiction is a family affair around here.)

Compare: If you bought these books individually, you'd pay a minimum of $60. That's not even counting the exclusive short stories.