A court has heard secret recordings of a couple talking about the moment their son allegedly killed his ex girlfriend.
Elliott Turner is accused of murdering Emily Longley at his home in Bournemouth and both he and his parents - are accused of perverting the course of justice. They all deny the charges.
Aspiring model Emily Longley was originally from New Zealand, but the 17-year-old studying at Brockenhurst College in Hampshire at the time.
The murder trial at Winchester Crown Court is now in its second week.
Our reporter Richard Slee sent this report from Winchester Crown Court.