In the early 1800s, Rachel Greenhow, a young Quaker, goes missing in the Canadian wilderness. Unable to accept the disappearance, her brother Mark leaves his farm in England, determined to bring his sister home. What follows is a gripping account of Mark's odyssey and his travels with the voyageurs - the men who canoe Canada's fur-trade route. As adventure and discovery propel the plot forward, Elphinstone takes the reader back in time and intertwines the story with enduring themes of love, war and family ties.