The Wilhelmina Adventures Books in Order

The Wilhelmina Adventures is Whitney Dineen's middle grade side, and it has a different rhythm from the adult romances. These books are built around mystery, friendship, family oddness, and the kind of adventure that makes moving to a new town feel less like a disaster and more like the beginning of a secret life.

Wilhelmina Snodgrass would probably roll her eyes at that description.

When the series opens, Willy is not thrilled about leaving her old life behind and moving to the Willamette Valley in Oregon. She expects boredom, loneliness, and the social misery that comes with being the new kid. Instead, she meets the wildly memorable Thomasina Andretti, gets pulled into old family mysteries, and learns that her own ancestors may have a lot more influence over her life than she thought. In Wilhelmina and the Willamette Wig Factory, the girls get mixed up in a plan to reopen a once-famous factory, with help from the other side and a trail of odd clues.

The second book, Who the Heck is Harvey Stingle?, keeps the core trio in place and deepens the mystery. Willy and Tomasina are no longer just surviving school and weird town history. They are actively investigating why another boy can see and speak to the family ghost that already upended Willy's world. That pushes the series toward time travel, local history, and bigger questions about what the past still wants from the present.

What makes these books fun is the mix. There is school drama, a popular-girl enemy, crushes, misunderstandings, and slapstick, but there is also a real sense of forward motion. Willy is not simply reacting to chaos. She is growing braver, making close friendships, and learning how to step into a story bigger than herself.

So if you are looking for middle grade books with ghosts, humor, and a lively heroine who never asked for this much excitement, this series is a good fit. It is light enough for younger readers, but it still has enough mystery to keep the pages moving.