"Crispin" is a historical novel written by Avi, set in 14th-century England. The story follows a young boy named Crispin, who is labeled as a "wolf's head," meaning he is an outlaw with a price on his head. As he flees from danger, he embarks on a journey of self-discovery and adventure. Throughout his travels, Crispin meets a mysterious man named Bear, who becomes his protector and mentor. Together, they navigate the challenges of a feudal society, exploring themes of freedom, identity, and friendship. The novel highlights the struggles of the lower class during this period in history.