A new theory on the 1970 Crewe murders is revealed in a book being released today, however the man twice convicted of the crime isn't interested in its findings.
Arthur Allan Thomas was pardoned in 1979 of the murders of Pukekawa couple Jeanette and Harvey Crewe.
While the case remains unsolved, a book The Case of the Missing Bloodstain, claims Jeanette's father Len Demler is the culprit.
Mr Thomas says he's moved on since being pardoned.
"I've got my own life to lead, and maybe they can sort it out," he says. "I just want to do my own thing.
A Royal Commission found police had planted evidence to frame Mr Thomas.
source: newshub archive