Book 1

The Crossroads

by Chris Grabenstein

Published 1 January 2008
When eleven-year-old Zack Jennings moves to Connecticut with his father and new stepmother, they must deal with the ghosts left behind by a terrible accident, as well as another kind of ghost from Zack's past.

Book 2

The Demons' Door

by Chris Grabenstein

Published 22 August 2017
Previously published as The Hanging Hill. From the New York Times bestselling author of Escape From Mr. Lemoncello's Library and coauthor of I Funny and Treasure Hunters, comes a series of spine-tingling mysteries to keep you up long after the lights go out.

Every theater has its demons.
At this one? They’re real.

Zack is staying at the Hanging Hill summer theater, a place where he and his family hope to recover from the fiery fallout of Zack’s last ghostly encounter. The theater is all set to stage Zack’s stepmother’s play . . . or so they think.

What Zack doesn’t know is that the director has another show in mind, and that production requires a child born under a full moon. A child who will not survive opening night. And Zack? He was born under a full moon.

Zack has battled evil spirits before, but this time he’ll learn that just because it’s a playhouse doesn’t mean that the ghosts are playing.

Read all of Chris Grabenstein's Haunted Mysteries!
The Crossroads
The Demons' Door
The Zombie Awakening
The Black Heart Crypt 

Book 2

The Hanging Hill

by Chris Grabenstein

Published 1 January 2009
While working at a summer stock theater, eleven-year-old Zack and his stepmother encounter the ghost of one of Connecticut's most notorious criminals.

Book 3

The Zombie Awakening

by Chris Grabenstein

Published 22 August 2017
Previously published as The Smoky CorridorFrom the New York Times bestselling author of Escape From Mr. Lemoncello's Library and coauthor of I Funny and Treasure Hunters, comes a series of spine-tingling mysteries to keep you up long after the lights go out.

Where there’s smoke, there’s fire.
It just doesn’t usually come from the grave.

The basement of Zack’s new school is hiding something, or rather someones. Two ghosts, to be exact—Joseph and Seth Donnelly, brothers who perished in a suspicious fire.

But the ghosts are the least of Zack's problems. It’s what they warn Zack about that has him truly frightened: there’s an evil zombie lurking beneath the school.

Fortunately, Zack has some new friends, Malik and Azalea, who can help in his paranormal adventures. Together they’ll attempt to dodge the zombie, a treasure-seeking hit man, a voodoo-savvy ghost just waiting fora new body, and more. But will they survive until recess or end up on the lunch menu?

Read all of Chris Grabenstein's Haunted Mysteries!
The Crossroads
The Demons' Door
The Zombie Awakening
The Black Heart Crypt

Book 4

The Black Heart Crypt

by Chris Grabenstein

Published 23 August 2011
A 200-year-old ghost inhabits a living ancestor in order to take revenge on eleven-year-old Zack and his family.

The Smoky Corridor

by Chris Grabenstein

Published 24 August 2010
With the help of his stepmother, his dog Zipper, and new friend Malik, Zack Jennings faces ghosts and zombies at his new middle school, which is said to house a lost Confederate treasure.