Zachary Oliver still has flashbacks to the look of devastation on his six-year-old son Noah's face, seven years after the worst day of his life.
It was the Saturday morning that Noah had looked forward to for months – the gymnastics competition that would showcase his exceptional talent for the sport he'd grown to adore.
But Zachary – who is separated from Noah's mother – didn't wake up until 11am. The competition started at ten. He'd missed it.
It was the inevitable all-time low that bookended a decade of a gradual decline in his ability to function.
The night previously, like so many others, the then 29-year-old had been out on an almighty cocaine bender, involving punch-ups and romantic liaisons with strangers.
