Labyrinth (Paperback) (ISBN-13: 9781644703564)

Dan and Stewie get call the call from a real estate agent friend. Issues with a distant property, outside of Seattle.

In the middle of a labyrnth built by a now-deceased wizard, they must clean up a stepping disk--a type of portal--so that innocents won't activate it accidentally.

Little do they know the trouble awaiting them.