The saga of Delayed Departure continues with this book, The Promise.

The Promise begins where Delayed Departure ended. Backed into a corner to not leave the ranch but wanting to find her father, Addi Drury sets off on a life-or-death adventure. As in Delayed Departure, the handmade knife, the queen of diamonds, and in this book, a pewter unicorn figurine play significant roles in Addi's quest to find her father and bring him back home.