When Grace Underwood arrives on Kelley's Island to teach at a one-room schoolhouse, she expects a quiet year of traditional lessons. Instead, she finds herself embroiled in a century-old mystery when one of her students, Ashley Reed, claims to be communicating with the ghost of a Civil War soldier's son.

Armed with the unconventional teaching methods she learned at Mrs. Pink's History Mystery School, Grace must navigate skeptical friends, concerned parents, and many doubts as she helps Ashley uncover the truth behind two matching lockets and a family torn apart by war. With the help of her mentor, Mrs. Pink, and a determined group of young students, Grace discovers that some of history's most important lessons can't be found in textbooks.

This first book is set against the rich historical backdrop of Lake Erie's islands and the Civil War-era Johnson's Island Prison, "Miss Understood and the Case of the Missing Locket" weaves together ghost stories, historical mysteries, and the timeless power of family bonds. This enchanting middle-grade novel reminds us that sometimes the most extraordinary discoveries come from being misunderstood - and that every person and every object has a story waiting to be told.

Perfect for fans of The Ghost of Grey Fox Inn, Chasing Vermeer, and The Mysterious Benedict Society, this captivating tale will inspire young readers to look beyond the surface and discover the hidden stories all around them.