I'll save Dixpat the answer.
Perhaps he was convicted twice because the evidence was flawed and not just the cartridge case. That alone puts doubt out there as to what else could be corrupted.
The key piece of evidence that got very little publicity...
… mainly because the Auckland Star editor, who hated cops, did a Donald Trump and kept on raving about the bullets....which was fair enough because that part was true...
… the evidence was that many farmers in those days had rubbish tips, usually over the back of the farm.
Thomas had an old trailer with a broken stub axle. The break was nice and clean, straight through.
Half the stub axle remained in the tip, somehow the other half ended up weighing one of the bodies in the Waikato River.
Funny you might think?
So did both juries.
The prosecution hammered it mercilessly through both trials, and made sure every morning the two halves of the axle were placed on the bench in front of the jury.
Now just consider yourself as a jury member, spending all day listening to endless bullshit, and right in front of you were these two half stub axles.
Tell me honestly what you would think, and would you have any doubt the prick was guilty?
… and further with all the headlines about the planted bullets...and the Auckland Star being the local version of Fox News, the press (and the public) paid little attention to the stub axles...
… and further with the massive amount of bleating Thomas and his supporters made, they never mentioned the stub axles, although as time wore on and it got more mention they turned to conspiracy theories like the Detective who was first on the scene did it.
One of their theories was that the Detective had a crush on the woman, (he didn't even know her) so he went to the tip and took half the axle, then murdered them both, and used the axle to weigh the guy down in the river....just to frame Thomas...who he did not know either!!!
A problem with that theory was that it surfaced years afterwards and after the Detective had long died.
Also, there were many very strange stories about the dead woman's father, and who fed the poor child for many days before the bodies were discovered.
So yes ladies and jellybeans, there were many strange happenings around that murder, the planted bullets being particularly stupid.
However, to this very day nobody has explained how how half a stub axle made it from a tip over the back of Thomas's farm to weighing down one of the bodies in the Waikato River.
… and neither did the Royal Commission...
Next question, how does Bruce know all this?
Bruce is a train spotter, knows heaps of lawyers, and all of this was well known and available in court transcripts...but that was a very long time ago.