The Bucktail Cap in the Trunk: Volume 3 (More Secrets of Marienstadt)

X - A Mystery in Porcupine Run: During an excavation a skeleton is found just outside of town and it is up to Henry to uncover a mystery from long ago.

XI - Peeper's Treasure Hunt: Blaise Hanes's stories about a lost shipment of Civil War gold sends Peeper Baumgratz on an expedition into Dent's Run to find it.

XII - The Wilds: As Gretchen tries to adjust to her new life in Opelt's Wood she worries that she is too spoiled until her elderly cousin Ezra, and mushroom hunter Vinnie Loverso, take her for a ride and tell her a magical tale of renewal and rebirth.

XIII - The Bucktail Cap in the Trunk: On the night of the Winter Solstice Gretchen and Oliver entertain Gretchen's Uncle Ulysses, who tells them an incredible story about four brothers who were their ancestors, and who fought in the Civil War in the 42nd Pennsylvania Volunteers Regiment--the famous "Bucktails."