Nathan Matthews has been jailed for life with a minimum of 33 years for killing his stepsister Becky Watts.
Matthews, 28, was found guilty of murdering the 16-year-old in a sexually motivated plot before dismembering her body in the bath.
His girlfriend Shauna Hoare, who was found guilty of manslaughter, was jailed for 17 years.
They cried, sobbed and hugged each other as the jury confirmed what they had always believed.
Becky's family knew that Nathan Matthews and his girlfriend, Shauna Hoare, had acted together as they killed her - and then set about the grisly dismemberment of a teenage body.
Listening to those gruesome details, repeatedly recounted in court, is as painful today as it was the day the police told them what they had found.
"Hate’s not a powerful enough word. Not even despise," says Becky's aunt, Sarah Broom, of Matthews - the man who joined their family through his mother's marriage to his victim's father.
Shauna Hoare wiped away a tear and any hope of freedom as her guilt was confirmed in court.
This was the "best result" said Becky's uncle Sam Galsworthy, speaking outside afterwards, relieved that finally the truth had been decided.
Nathan Matthews has been jailed for a minimum of 33 years for dismembering and murdering his stepsister Becky Watts.
The mother of murdered teenager Becky Watts reduced many in court to tears with a powerful victim impact statement.
Becky Watts' killers have "no right to walk God's green earth", her father has told Good Morning Britain.