Acclaimed author Lian Tanner's Icebreaker was shortlisted for Australia's Aurealis Award for Best Children's Book. Here 12-year-old Petrel is an outcast surviving in the shadows aboard the Oyster, a 300-year-old icebreaker. Risking everything to save a frozen boy found adrift, Petrel quickly uncovers the disturbing truth about both the ship and a secret mission of death and destruction.