Books Written by Chris Grabenstein & James Patterson View Chris BooksNewsletter All THE TREASURE HUNTERS SERIES (8-12) THE MAX EINSTEIN SERIES (8-12) THE JACKY HA-HA SERIES (8-12) THE KATT-DOGG SERIES (8-12) THE I FUNNY SERIES (8-12) THE HOUSE OF ROBOTS SERIES (8-12) CO-AUTHORED STANDALONES 2016 2017 2017 2021 2021 View Chris BooksNewsletter
