The broad outlines of Dickens' life are well known. His father was charming but financially incompetent, spending time in debtors' prison and Charles had to work in a blacking factory when he was 12, a humiliation which lingered throughout his life. His formal education ceased when he was 15. He became a parliamentary reporter, turned to writing and by the time he was 25 had established a public reputation which continued to grow throughout his life.
Tomalin fleshes out the bones of this life with a wealth of detail, all telling and relevant, and she exercises a keen critical eye on the strengths and weaknesses of his writing, not sparing the lash on his many potboiler works but with an enthusiast's appreciation of his qualities.
But she is at her best in tackling Dickens' convoluted private life. He married Catherine Hogarth young and fathered 10 children before casting his blameless wife aside and concentrating his emotional life on a teenage actress, Nell Ternan, and his sister-in-law, Georgina. Whether his relationship with Ternan was physical remains controversial, although Tomalin, whose life of the actress is another biographical triumph, is firmly and convincingly of the belief that they were lovers and that Ternan bore him a son who died.
Whether or not the affair was consummated, his infatuation with Ternan dominated his later years and contributed to his appalling treatment of Catherine, behaviour so heartless it can only be read with astonishment.
His private callousness was not restricted to Catherine - those of his children and friends who upset him were cast into the darkness of ostracism with no hope of reprieve. And yet this was a man who for years supported a host of families who had fallen on to hard times.
Like his contemporary Gladstone he took an interest in the plight of London's prostitutes and set up an exemplary non-judgmental institution to help them, which he oversaw in every practical detail. But his concern did not stop him using prostitutes himself or suggesting to a friend where he might find them.
The mainspring of Dickens was his art and he was still devotedly writing his last, unfinished, novel at the end of his life, suffering under a burden of chronic and severe ill health, probable alcohol dependence and emotional burdens that would have stilled the pen of most men.
There are shelves full of works about this fascinating, paradoxical man but there can be few to equal this absorbing, intelligent book.
John Gardner is an Auckland reviewer.