Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Good example of thrillers of the 1960s

Most of us will have heard of Ian Fleming and Alistair Maclean, but there were other writers like Geoffrey Jenkins who wrote some good books which got overshadowed by the better known writers. This is a good example of his work. "A Grue of Ice" is another example.It is set partly in WW 2 and mainly in South Africa and Namibia circa 1959. As another reviewer said, there are some displays of racist attitudes which may upset people today. Remember that this is what you would expect from a South African of the 1960s, and treat the book on its own merits. A good read. I would say that it is comparable to the better books of Alistair Maclean.