Ghostwriter? No, the text copyright is for Ann M. Martin.
Illustrator: Gale Galligan (praise for Galligan's work from previous illustrator Raina Telgemeier is prominently displayed on the cover)
The plot is almost exactly like the original version of Dawn and the Impossible Three, but includes parts of Hello, Mallory in the form of Mallory joining as a junior member (Jessi is not in the graphic novel),
Established or continued in this book:
The Girls (and Logan):
Claudia candy: Gummi worms
Mary Anne's redecorated room (in chocolate brown and green instead of navy and yellow)
Dawn and Jeff eating their organic pizza (Dawn specifically asks Jeff if he wants "organic pizza")
The Bizzer Sign
Dawn's grandparents seeing Richard for the first time in years
The Club (and clients):
Mallory describes how Nicky broke his finger
Mallory's first meeting and the infamous test. She stands up for herself better here.
Mallory saving Marnie from the chocolate brownie
Mallory joins as a junior member
The Puddle Walk (I've always loved this idea)
SMS lunchroom (Dawn, Mary Anne, and Kristy are eating with the Shillaber twins)
Yay, Dawn's wearing a helmet! I know they were less the norm when the books were published (thirty years ago!) but with an uncle who's not only into outdoor sports but also an ER doctor, I'm glad Galligan put this detail in.
Martin dedicates this book to her aunt Dot. Galligan gives "eternal thanks to Mom, Dad, Lori, AMM, Raina Telgemeier, Cassandra Pelham, David Saylor, David Leviathan, Phil Falco, Sheila Marie Everett, Braden Lamb, John Green, Dave Roman, Rachel Young, Ngozi Ukazu, Dave Valeza, and all my beloved friends, family, and grads. [line break] And to Patrick, who gets his very own line because he is my favorite boy."
I really hope the release of this and Kristy's Big Day means we'll get at least the first ten books as graphic novels. I'd love to see The Ghost at Dawn's House in this format. Maybe some of the more memorable books or Super Specials so we can see Jessi, Logan, Shannon, and Abby!