Life on New Mars is tough for humans, but death is only a minor inconvenience. The machines know their place, the free market rules all, and only the Abolitionists object. Then a stranger arrives on New Mars, a clone who remember his life on Earth as Jonathan Wilde, the anarchist with a nuclear capability who was accused of losing World War III. This stranger also remembers one David Reid, who now serves as New Mars' leader. Long ago, it turns out, Wilde and Reid had shared ideals and fought over the same women. Moving from 20th-century Scotland through a tumultuous 21st century and outward to humanity's settlement on a planet circling another star, The Stone Canal is idea-driven sci-fi at its best., making real and believable a future where long lives, strange deaths, and unexpected knowledge await those who survive the wars and revolutions to come.