Chains by Laurie Halse AndersonAs the Revolutionary War begins, Isabel, 13, wages her own fight...for freedom. Promised freedom upon the death of their owner, she and her sister, Ruth, in a cruel twist of fate become the property of a malicious New York City couple. When Isabel meets Curzon, a slave with ties to the Patriots, he encourages her to spy on her owners, who know details of British plans for invasion. Reluctant at first, Isabel realizes her loyalty is available to the bidder who can provide her with freedom.