This is the story of two sisters, Ida and Martha, and their friends, Lizzie and Sarah, and a harrowing ride in a boat and a comforting ride on a back. Alderson’s turn of the century A Ride for Martha tells of the friendships and loyalty among the children of a multi-ethnic community, made up of Coast Salish peoples, Scottish immigrants and freed African-American slaves. It is true to the rich history of Salt Spring Island.