In this epic novel, Mr McCann combines both historical facts and fiction. On the historical side, the story opens with the digging of a railway tunnel under the East River in New York in 1916. The reader follows the main character, a coloured man called Nathan Walker, a sandhog who struggles daily with his shovel against the earth. The working conditions are atrocious: the heat, the noise, the dirt, the physical strain - the digging was done by manpower in these days. Later Nathan marries Eleanor O'Lear, a white woman of Irish descent. Such a marriage was considered by most New Yorkers as a disgrace at that time. They bring up two children, both a social and a financial challenge.
Parallel to Nathan Walker's story, the reader follows another character, a homeless man nicknamed Treefrog who made his home in one of the many disused tunnels in New York in the 1990s. At first there appears to be no connection between Nathan and Treefrog but soon enough the reader discovers how and why they are linked in the novel.
With a marvellous narrative for its economy, Mr McCann constructs a beautiful epic story of laughter and tragedy, of sadness and small victories. It is an authentic account about homelessness, about living below the rich and about the stronghold of the past.