The stepbrother of Becky Watts's has been found guilty of murdering her during a sexually motivated kidnap plot.
Matthews, 28, went to the 16-year-old's home in February, suffocated her in her bedroom and stabbed her in the abdomen 15 times after her death.
He then dragged her body into the boot of his car and drove it to the home he shared with his girlfriend.
Matthews then bought a saw, goggles, masks, bags, cling film and tape to cut up and package Becky's body.
His girlfriend Shauna Hoare has been cleared of the murder but found guilty of manslaughter.