He pauses for a moment, and then stares up with light blue eyes.
He describes Ann, his slain daughter, as a quiet girl who loved animals and collected porcelain cats. A promising student, she got caught up in the times, dropped out, joined a commune.
"They planted trees, that sort of thing," he says. "It caused an estrangement between me and my daughter, which actually was resolved before she was killed. I spoke to her and explained to her that I forgave her, you know, for what she had been doing. I did not want to continue to be hostile to her activities."
After the murder, Durrant was preoccupied with trying to hold his family together. He assumed that the killer must have been on drugs and that he would be caught.
"I thought it was just a matter of arresting him," he recalls now, 35 years later. "I was astonished nothing happened. My wife was devastated."
In his view, his daughter's murder was a sinister product of the era of "hippiedom," as he calls it. He issues his indictment in a torrent, expressing "a profound sadness about the whole business of hippiedom, you know. The whole drug culture, the whole false innocence. It's a radical betrayal of everything that civilization stands for. And so eagerly embraced by so many people. The whole flower child business, you know?
"False innocence, turned so nasty."
As for the man accused of killing his daughter, Durrant says that there was a time when he was eager to see him put to death. That time has passed.
"I would just like him to be confronted with his responsibility," the father says, a slight spark of heat rising in his voice. "That's all."
Times researchers John Tyrrell and Nona Yates contributed to this report.