Through bitter winters, Rumkowski kept driving his half-starved, half-frozen workforce to produce more and more for their conquerors, while still acceding to German demands for the deportation of the very young and very old and anyone else considered unfit for the long hours of arduous labour.
Under Rumkowski's control, the Jewish population had their own police force with members often as brutal as the Germans, but his control loosened as the Russians began winning the eastern front war and the tempo of deportations to the death camps increased.
Rumkowski has become a figure of Holocaust folklore, the subject of an earlier novel, The King Of The Jews, back in 1979. Over the years, a number of attempts have been made to assess his true intent, measure his successes and failings.
There is little equivocation in the picture Sem-Sandberg paints: a seriously insecure, self-serving man who affects a protective love for children but is a paedophile preying on his adopted son.
The novel itself - for all its sad depiction of human frailty - is a gripping read. You have to pay attention to take in the gallery of characters as time and place shift surrealistically.
Many of the inhabitants fight desperately to save themselves and those they love. The man who lasts longest is the hero, and not in the literary sense, Adam Rzepin. His disturbed but beloved sister dies early, but Adam nearly makes it.
Gordon McLauchlan is an Auckland writer.