The following day the pair dragged Ms MacKenzie’s body into the bath and dismembered it after Higgins went out and bought a saw.The victim’s body was cut into 12 pieces and her upper torso, lower torso, a leg and feet were dumped in four bins in Montrose.The rest of her body, including the head and thighs, was packed in a rucksack and a suitcase and left in the shower cubicle of a house in Montrose for which Higgins had the keys. She told the jury that Jackson was violent and she was scared of him. This is a picture of depravity of such horrendous proportions you might have thought could only happen in the pages of crime fictionAshley Edwards QC, prosecuting They were caught on CCTV, after the killing, walking through Montrose carrying a child’s rucksack and a green suitcase containing body parts, including the victim’s head. The judge Lady Rae said it was one of the most distressing cases she had heard and told them: “I have difficulty finding appropriate words to describe these horrific depraved crimes.”Jackson and Higgins blamed each other in court. She said in evidence that Jackson attacked Ms MacKenzie minutes after she visited them in the home they shared.She told the High Court in Glasgow that he hit her on the side of the head with hammer while she was drinking tea. He then hit her repeatedly after she fell over.As Ms MacKenzie lay dying, the pair went out to buy heroin and were seen on CCTV walking hand in hand. Michelle Higgins helped dispose of bodyCredit:Paul Reid A man is facing a life sentence for murdering and dismembering a mother-of-three before hiding her body parts in bins in a crime so “horrendous” a court was told it sounded as if it could only be “from the pages of fiction”.Steven Jackson, 40, battered and stabbed his former partner Kimberley MacKenzie at a flat in Montrose before cutting up her body in a bathtub.The 37-year-old sustained at least 11 blows to the head and was stabbed more than 40 times. The following day he chopped up her body in a bath. Jackson’s co-accused, Michelle Higgins, 29, a friend of the victim, was cleared of murder when the charge against her was found “not proven”, but found guilty of helping dispose of the remains.The former lovers had both been charged with murdering Ms MacKenzie at a flat in Market Street, Montrose, on Oct 27 last year. Want the best of The Telegraph direct to your email and WhatsApp? Sign up to our free twice-daily Front Page newsletter and new audio briefings. Police search after the murder in MontroseCredit:Paul Reid The killer Steven JacksonCredit:Paul Reid Ms MacKenzie was reported missing by her 66-year-old father Terence on Oct 28 last year.Days later, police visited the pair in Market Street and noticed a “smell of death” by the bins in the communal close.At the end of the five-week trial, Ashley Edwards QC, prosecuting, told the jury: “This is a picture of depravity of such horrendous proportions you might have thought could only happen in the pages of crime fiction, not in a small market town.”Prosecutors believe two knives, a hammer and a large paint scraper were used in the murder.Jackson has 21 previous convictions, including misuse of drugs, breach of the peace, housebreaking and fire-raising. Higgins has previous convictions for shoplifting and breach of the peace.The pair will be sentenced on Jan 17.