It describes, at length and in detail and with scrupulous care, how the Chinese Communist Party is exerting ever tightening control over Australian politics and public life, with the express aim of suppressing, not only criticism of China, but democracy, academic freedom, free inquiry, free speech and other traditions of Australian life which the CCP finds disagreeable and which it wants to see abolished, worldwide. It is strongly reminiscent of George Orwell's essays about the craven support of many British politicians and the massed ranks of the intelligentsia for: first Hitler and then Stalin. The fact that whilst most of Orwell's essays were five to twenty pages long, Professor Hamilton's book is far weightier (376 pages and 7422 Kindle locations) is explained by the sheer breadth and depth and the CCP's ambitions in Australia and the extent of the sellout which Australia's politicians and intelligentsia have contrived -and the patient thoroughness with which Prof. Hamilton has investigated these matters.
It shows how Australia is being isolated from the United States and other allies (that the Commonwealth is not mentioned by Prof. Hamilton shows how successful that part of the strategy has been!) and how Australians are being told that "China is our future". Sooner or later, every country will be told that, because the CCP intends to dominate, not just Australasia, but the whole world, harking back to a mythical time when China ruled "everything under heaven". (It is mythical because Chinese emperors uniformly pretended that countries outside their control did not exist, or were already obedient to their rule. The arrival of the first British Ambassador was a rude shock, from which the CCP has evidently not recovered.)
The book is also at great pains to point out that Chinese Australians are the primary victims of all this, because the CCP aims to control their thoughts and deeds as if they were in Communist China, and many "Chinese" Australians either fled to Australia from Communist China, or were born in other, non-Communist, Chinese communities, such as Singapore. The CCP does not accept that any of them have a right to dissent in any way from CCP rule and doctrine. The CCP makes all ethnic Chinese into its shock-troops, but claims that EVERY act of resistance or even criticism is "racist". Even when the critic is himself Chinese!
Though the book is written from an entirely Australian viewpoint, it needs to be read outside Australia, because Communist China's ambitions extend beyond Australia and Australia and New Zealand are the CCP's chosen test case for controlling and subjugating free Western cultures. Or free Asian cultures, or free African cultures. (As the president of Botswana has already perceived!)
Although some of Prof. Hamilton's allies (eg: "China Uncensored") have decried "Brexit" as a tragedy and a case of Britain somehow selling the pass to the CCP, the book itself describes the transition which Greece has made, to CCP client state status, whilst remaining in the EU, with the effect that Greece now vetoes any attempt by the EU to take any ACTION at all against the CCP's human rights abuses. The implication of that is that the only way Britain will be able to make any protest about human rights abuses, or even territorial abuses, by the CCP, is from outside the EU. The CCP controls only one EU country: that is proving quite sufficient to shut the EU off as a world power critical of China!
The CCP was able to secure a veto on EU foreign policy simply by buying dockyards in Greece at fire-sale prices. This was a pretty cheap deal, and the veto will last as long as the EU does.
So, read this book, because it's in your interests to know what's going down -and the kindle version is less than half the price of the print version, so buy that- but expect to be appalled rather than enthralled. Alarm calls are never welcome, but they are infinitely better than burning to death!