So how did this start?
It began with a simple emailed invitation about midday on March 19: "You are warmly invited to the launch of a new book written by Nicky Hager." There were no other details, as is common with Hager's books.
The launch at Unity Books on Willis St in Wellington two days later was a crowded affair.
It emerged - with the appearance of war correspondent Jon Stephenson - that Hager's invitation had been slightly disingenuous. As he explained, notice that the book was co-authored by Stephenson would have clearly signalled the subject area.
What's in the book?
Its full title is Hit & Run: The New Zealand SAS in Afghanistan and the meaning of honour. Central to the book is the now much-discussed NZSAS raid on August 22, 2010, in Baghlan province.
It describes the lead up to and execution of a raid called Operation Burnham by the NZSAS, which was stationed in Kabul at the time, on August 22, 2010.
It alleges the motivation of the raid was vengeance for the death two weeks earlier of Lieutenant Tim O'Donnell, who was based in Bamiyan province with the NZ Defence Force's Provincial Reconstruction Team.
Hit & Run claims the raid was botched and the NZSAS was responsible for the deaths of six civilians and the wounding of 15 others. The responsibility is sheeted home through the claim that the operation was conceived, planned, organised and overseen by the NZSAS.
It claimed that two of the dead were found with bullet wounds and the other four were killed by air support from United States Air Force Apache helicopters.
Further, it claims that the NZSAS deliberately torched houses in the villages that were the target of the raid and returned two weeks later to destroy more with explosives.
There's more. Other claims in the book are that the NZSAS continued to hunt O'Donnell's presumed killers and on catching one, beat him then handed him over to Afghan security forces with a reputation for torture. Other suspects were also hunted and killed.
Finally, Hit & Run claims this was followed by a deliberate cover-up with New Zealand Defence Force and politicians saying no civilians were killed.
And even when then-Defence Minister Jonathan Coleman conceded in 2014 that there were possible civilian casualties from air support, NZDF continued to say claims of civilian death were "unfounded".
It was New Zealand's fault, the book claimed, and an inquiry was needed to find out who had kept the truth from the public. The underlying issue is the question of war crimes - a very serious allegation.
Did we know any of this?
Yes and no. The raid was first revealed in 2011 by then-Defence Minister Wayne Mapp during a television interview. He was briefed on the raid and visiting NZDF personnel in Afghanistan at the time.
Mapp was asked if NZSAS was involved and confirmed it was, which TVNZ then reported along with its understanding 12 opposing combatants had been killed.
Asked about civilian casualties, he said that had "proven to be false". NZDF clarified shortly after saying nine "insurgents" had been killed and for the first time said reports of civilian casualties were "unfounded".
Have we heard from the villagers?
Hit & Run
named those said to have died, had copies of their death certificates, photographs of those said to have been injured and interviews with those who claimed to have witnessed what occurred.
Then, three days after the book's release, lawyers came forward acting on behalf of the villagers to say their clients were seeking an inquiry into the allegations.