Gracie is an illustrated book for children ages 5 - 12 that tells the story of a very special sea monster living in the Chesapeake Bay. Havva, age 7, and her brother Peter, age 9, have recently moved to the town of Havre de Grace on the upper Chesapeake Bay and ride their bikes to explore their new location. They discover an old run-down boathouse, and inside Havva opens a dusty trunk to find a map. While Peter explores outside, Havva meets Gracie, the sea monster who lives on the map. She and Gracie start a conversation, and when Peter returns, he learns that he can communicate with her too. The children learn from Gracie and in the end, learn about themselves and the world around them.