Two teenage sisters are due to be sentenced for the brutal knife murder of their father.
Retired antiques dealer Antoni Robinson, 61, from Old Colwyn, north Wales, was stabbed 15 times as his daughters and their boyfriends tried to get their hands on the contents of his safe.
Ashleigh, 19, and 16-year-old Holly Robinson "supported and encouraged" the frenzied late-night attack on Mr Robinson in July last year, Mold Crown Court was told.
The pair were convicted of murder alongside boyfriends Gordon Harding, 20, and Sacha Roberts, 19, following a month-long trial.
The four had hatched a plot to sneak into Mr Robinson's bedroom and take the contents of his safe - around £900 in cash.
Harding repeatedly knifed Mr Robinson, who was asleep in bed, using a knife handed to him by Roberts as the girls stood by, prosecutor Andrew Thomas, QC, told the jury.
Mr Robinson suffered wounds to his face, neck and upper body, including four stab wounds to his back. The jugular veins on both sides of his neck were severed and he died within minutes of the attack, Mr Thomas said.
The sisters and their boyfriends then plotted with the girls' mother Joanne Barr to give a false account of what happened to police - claiming Mr Robinson had attacked one of his daughters and Harding killed him in self-defence. But the prosecution showed Mr Robinson had not been able to fight back or to escape.
Barr, her daughters and Roberts pleaded guilty to conspiracy to pervert the course of justice. Harding was found guilty of the same charge by the jury.
The four killers and Barr will all be sentenced by Mr Justice Griffith-Williams at Mold Crown Court.