A Western Australian man who admitted murdering his girlfriend during a violent confrontation at her Perth home has been sentenced to life imprisonment, with a minimum term of 18 years before he can apply for parole.
Tobias Marcus Nuttall, 33, was sentenced in the Supreme Court of Western Australia after pleading guilty to the murder of 30-year-old Alisha Lauren Hendren-Krippner in August 2025. The case has drawn renewed attention to the devastating impact of intimate partner violence and the long aftermath for families left behind.
Life sentence after fatal Perth stabbing
The court was told Hendren-Krippner suffered multiple stab wounds during the attack, which occurred after the pair had returned from a trip to Sydney and as their relationship was unravelling. According to reporting by Nine, the killing followed an argument connected to the condition of her home ahead of a rental inspection.
Nuttall, who had been a co-host of a podcast before his arrest, called emergency services after the attack. He was found at the scene with blood on his hands and a dagger. Hendren-Krippner later died in hospital from serious injuries to her neck and body.
Justice Amanda Forrester described the attack as vicious and uncontrolled, saying Nuttall had not only taken Hendren-Krippner’s life but had shattered the lives of many others. The judge imposed a life sentence and set a non-parole period of 18 years.
Court hears of family’s grief
Victim impact statements read in court described Hendren-Krippner as a much-loved daughter whose death had left her family in profound grief. Her father, Calvin Krippner, said she had a beautiful laugh and would light up a room when she entered. Her mother, Anita Krippner, described the family as being trapped in a nightmare.
The sentencing hearing also examined Nuttall’s account of what happened inside the home. He claimed Hendren-Krippner had picked up the knife first during the argument and that he reacted in rage. The judge said the court could not determine every detail of the confrontation but found the violence inflicted on the 30-year-old was extreme.
The court heard Nuttall had used illicit drugs during the period before the murder and was later found to have methamphetamine in his system. Prosecutors and the judge also considered his conduct after the killing, including whether he had fully accepted responsibility for the fatal attack.
Domestic violence focus remains
While every homicide case turns on its own evidence, the sentencing comes amid continuing national concern about violence against women and the risks faced by people in intimate relationships. Courts across Australia are increasingly being asked to weigh not only the immediate circumstances of fatal assaults, but also the broader context of coercive, volatile or drug-affected relationships.
For Hendren-Krippner’s family, the sentence marks a formal conclusion to the criminal case but not to their loss. The minimum term means Nuttall will remain in custody for at least 18 years before the question of parole can be considered. Even then, release would depend on the parole authorities assessing his risk, rehabilitation and conduct in prison.
The case was reported by Nine and AAP from the Western Australian Supreme Court. Support is available for anyone affected by domestic, family or sexual violence through 1800RESPECT on 1800 737 732, and crisis support is available from Lifeline on 13 11 14.
