A woman who lured her ex-boyfriend to a car wash, where another man shot him dead, has been sentenced to 20 years behind bars.

Tristan Castle lured her former partner Adrian MacDonald to a car wash in Parafield, South Australia in February 2013.

When he arrived he was fatally shot by Jason Bucca, who has been sentenced to at least 25 years in prison.

View photos Adrian MacDonald was shot three times by Jason Bucca. Source: 7 News. More

Their sentencing, which come exactly one year after the pair were found guilty, has given his family some closure.

“It’s still hard to deal with but we’re happy it's over so yeah we'll move on,” the victim’s brother Carl MacDonald said.

It took 12 months between their guilty verdict and their sentencing because Ms Castle and Mr Bucca launched an appeal against their convictions that failed.

View photos Adrian MacDonald was shot dead after being lured to the Big Bucket Carwash by his ex-girlfriend. Source: 7 News. More

The court had heard how Mr MacDonald feared a set-up, because there were allegedly debts owed to Mr Bucca.

Sadly, his instincts were right.

When he arrived at the car park Mr Bucca, who was hiding in the boot of a car, fired three shots at him. It was a shot to Mr MacDonald’s head that proved fatal.

Family friend Andrew Corker called the pair 'scum' outside court today.

"They are what they are - they're the scum of the earth and that's all they are mate and they are where they need to be,” he told 7 News.

"It's a pity they couldn't bring back hanging, that would be better."

Mr MacDonald’s mother Chris MacDonald was also left unsatisfied by the sentencing.

View photos Police and SES at the scene of the murder. Source: 7 News. More

"We're satisfied with the 25 (year sentence) but the 20, we thought is really not enough."

Ms Castle received the lesser 20-year sentence on the basis that she had intended to abduct and assault Mr MacDonald, not kill him.



In sentencing Mr Bucca, Justice David Peek said the man had showed a total disregard for the sanctity of life.