Chronicles of Narnia - C. S. Lewis
Out of Season
by Elizabeth Culmer (edenfalling)
In the fourteenth year of Rishti Tisroc's reign, a demon in the shape of a beaver is captured and brought to Tashbaan. Shezan Tolkheera, high priestess of the goddess Achadith, is given the responsibility of guarding the demon until its sacrifice at the Spring Festival. Complications ensue.