Nathan Matthews had murdered Becky and dismembered ... from an early point” Watch the full interview above. 'The Murder of Becky Watts: The Police Tapes ' is on ITV tonight at 9pm.

One of Becky ... part in the murder of the teenager in 2015. Becky, 16, was killed in a sexually motivated kidnap plot in ...

When 16yearold Becky Watts went missing in 2015 it sparked a major police investigation to find the teenager But only two people knew where she was her stepbrother Nathan and his girlfriend Shauna ...