AUSTRALIA - They drugged, bludgeoned and strangled their 16-year-old victim to death then they knelt over her lifeless, bloody body to kiss before dumping her in a wheelbarrow.
The horrific murder of Stacey Mitchell has attracted national headlines in Australia but questions remain as to why her roommates of only four days, Valerie Page Parashumti and Jessica Ellen Stasinowsky, violently attacked and killed the former Leeming High schoolgirl.
Supreme Court justice Peter Blaxell sentenced Parashumti, 19, and Stasinowsky, 21, to 24 years in jail each.
Blaxell said the "particularly horrifying and shocking" crime was devoid of a substantial motive.
"You have each had more than a year in custody to reflect upon the evilness of your crime yet you still lack remorse and obviously place no value on the sanctity of human life," he said. "There is also the added problem that you each enjoy being sexually aroused by the infliction of violence."
Stasinowsky and Parashumti, who had been together just a month, have offered no explanation or motive for the killing other than that Stacey "annoyed'' them.
One theory put to the court was that the couple appeared obsessed with proving their love for each other.
Both pleaded guilty last November to one count each of willful murder but they still do not seem to understand the gravity of their crime.
Court hearings have been punctuated with laughter, smirking and smiling.