More to explore:
The Traveler's Tricks: A Caroline Mystery (American Girl Mysteries) by Laurie Calkhoven, www.amazon.com/...
Intruders at Rivermead Manor: A Kit Mystery (American Girl Mysteries) by Kathryn Reiss *This is a recommendation for all American Girl Mysteries
American Girl - Caroline Mystery (Traitor in the Shipyard)
A Growing Suspicion: A Rebecca Mystery (American Girl Mysteries) by Jacqueline Dembar Greene, www.amazon.com/...
A Surprise for Caroline by Kathleen Ernst
Shadows on Society Hill: An Addy Mystery - The only mystery.
Caroline's Battle by Kathleen Ernst
The Puzzle of the Paper Daughter: A Julie Mystery
The Hidden Gold: A Marie-Grace Mystery
Mini Mysteries: 20 Tricky Tales to Untangle [American Girl Library] (Read it)