The word appears 1 times.
The usage in this book is not actually racist, but a reference to another well known (at the time) bit of doggerel that was a children's poem. American's know it as Ten Little Indians, but it is also known as Ten Little Niggers. The point of this little poem is that by the end of it they are all dead. The reference in the book talks about a series of murders and uses the poem to illustrate it.
If you want to see the words to this bit of child's poetry click here. The reference is as follows:
"Reimeck was the last," Control reflected, "the last of a series of deaths. If my memory is right it began with the girl, the one they shot in Wedding, outside the cinema. Then there was the Dresden man, and the arrests at Jena. Like the ten little niggers. Now Paul, Viereh, and Landser - all dead. And finally, Reimeck." He smiled deprecatingly; "that is quite a heavy rate of expenditure. I wonder if you'd had enough."