The Seeds of America trilogy stars Isabel, a teenaged slave. In the first book, Chains, she is enslaved by a loyalist Manhattan family, the Locktons. She lives and works there with her sister Ruth and is treated cruelty by Mrs Lockton. Although her freedom was promised by her former owner, she finds it hard to trust this will actually happen and contemplates running away. If you're a historical fiction fanatic like me, this series will draw you in until you finish the entire series.
In the second book, in the Seeds of America trilogy, Isabel has escaped and has joined up with Curzon. The two become spies for the revolutionaries during the American Revolution. This book follows them as they attempt to avoid being caught and survive the harsh winter conditions at Valley forge. Although this is touted as a middle grades series, teens and adults would still enjoy the historical accuracy of the series.
Three years later, Isabel and Curzon have escaped Valley Forge, and slavery and as runaway slaves, have walked the 1,000 miles from Pennsylvania to Virginia. They finally find Isabel's sister Ruth, but she isn't so happy to see them...find out why in the last book of the series