Christopher Robinson and Nicki Robinson jailed for Ridgehaven home invasion

A former law student and “gangland enforcer” are now behind bars after a thirst for revenge led to a shocking home invasion and throat slitting.

An aspiring lawyer is behind bars after she found herself on the wrong side of the law and committed a violent home invasion.

Nicki Meree Robinson, 30, and Christopher Geoffrey Thornton Robinson, 43, were jailed in the Supreme Court on Thursday for their terrifying act of retribution over a drug debt.

Christopher Robinson. Photos: Courts SA

Nicki Meree Robinson. Picture: NCA NewsWire

During sentencing, the court heard one of the victims, Beau McPherson supplied Mr Robinson with fantasy for $400 prior to the offending but hadn’t received payment from him.

The victims left a note saying “WTF is our money for the s*** we got yest (yesterday) – don’t make me come back,” on a car outside Ms Robinson’s Paradise home.

The note the victims left on Ms Robinson’s car. Photo: Courts SA

Inside the Ridgehaven granny flat where the alleged home invasion occurred. Photo: Courts SA

Ms Robinson, who was wearing a wig, and Mr Robinson burst into Mr McPherson and his partner Jason’s Whitehead’s Ridgehaven granny flat on September 27, 2021.

Mr Robinson pinned Mr Whitehead down, before slitting his neck with a sharp weapon, while Ms Robinson stole his phone.

Mr Whitehead was conveyed to hospital after having his occipital artery severed and sustaining a 15cm laceration to the back of his neck, which required medical staples.

The scar Mr Whitehead was left with after the attack by Mr Robinson. Photo: Courts SA

The bloody sheets after Mr Robinson stabbed Mr Whitehead in the neck during the home invasion. Photos: Courts SA

The court previously heard Mr Robinson bragged about being a “gangland enforcer” within hours of the home invasion.

Mr Robinson was found guilty of serious criminal trespass and causing harm with intent.

He was acquitted of the more serious charge of attempted murder, as well as robbery, while Jana Emily Henson, 39, was acquitted of serious criminal trespass and robbery.

Ms Robinson was found guilty by a jury in July of serious criminal trespass and theft after a month-long trial and acquitted of robbery.

The court heard she cut off her home detention bracelet in panic and absconded before the jury’s verdict.

Justice Adam Kimber said the duo’s motive was retribution and the home invasion was clearly premeditated.

“The assault upon Mr Whitehead has adversely impacted upon his enjoyment of life,” he said.

“He believes it played a part in the breakdown of his relationship with Mr McPherson.”

The court heard Ms Robinson was previously studying law at university but her life unravelled after she started using methamphetamine.

The court heard Mr Robinson was seriously injured in a motorbike accident at 29, with the pain medications he was issued providing some explanation to what led to his reliance on drugs.

Justice Kimber sentenced Mr Robinson to four years jail, with a non-parole period of two years and four months.

The sentence was backdated to October 5, 2021.

Ms Robinson was sentenced to two years and eight months jail, with a non-parole period of one year.

The sentence was backdated to July 28.