The lion hunter

by Elizabeth Wein

As mysterious threats to his family increase, twelve-year-old Telemakos, still haunted by his ordeal as a government spy and adjusting to the recent loss of an arm, is sent with his baby sister to live with Abreha, the ruler of Himyar, with the warning that, while kind, he is also dangerous and not to be trusted.

See on goodreads | librarything