Donald S Murray's "The Salt and the Flame" is historical fiction at its finest. The author uses the 1923 voyage of SS Metagama from the Isle of Lewis to Canada as the launching pad for an exploration of the experiences of transatlantic emigrants, as well as looking at the lives of those left behind. Two young people, Mairead and Finlay, meet on the ship and over time, in both Canada and the USA, their relationship develops, they marry and raise a family. We follow their lives, and that of Mairead's brother Murdo back in Lewis, from 1923 to 1970.
Along the way, the emigrants discover the difference between their hopes and the reality of living in poverty in a strange country without the support of extended families. We also see the different ways they respond to their experiences, with Finlay turning to drink and flirting with racist groups while Mairead does her best to walk the fine line between keeping the family together while refusing to collude with those, including her husband, who blame black people and others for the Depression. Through their eyes, we see the best and the worst of American life and culture.