
This episode covers the chilling murder of 16-year-old Becky Watts by her stepbrother Nathan Matthews and his girlfriend Shauna Hoare. Key discussions include the background of Matthews, the dynamics of the blended family, and the events leading up to Becky's tragic death.
Narrator Geoffrey Wansell describes the wedding day of Becky's parents, Anjie and Darren, where Nathan Matthews appeared to be a part of a happy family. However, tensions existed between Nathan and Becky, fueled by jealousy and resentment.
The episode details the day Becky went missing on February 19, 2015, when Nathan and Shauna visited her home. Despite the family's efforts to find her, it was later revealed that Nathan had murdered Becky and dismembered her body.
Investigators uncovered evidence linking Nathan to the crime, including a bloody fingerprint and CCTV footage of him buying a circular saw. Both Nathan and Shauna were arrested, with Nathan eventually confessing to the murder.
The trial revealed the disturbing nature of their relationship and the premeditated nature of the crime. Nathan was sentenced to 33 years in prison, while Shauna received 17 years for manslaughter.
Nathan Matthews murdered his stepsister Becky Watts, leading to a shocking trial and community tragedy.

This episode stands out for the following:
Becky was just 16 years of age.The Killer Step Brother | World's Most Evil Killers | True Crime
This killer story begins on the 9th of January, 1987.The Killer Step Brother | World's Most Evil Killers | True Crime
How dare you take the attention of my mom?The Killer Step Brother | World's Most Evil Killers | True Crime
It just didn't really make sense to us.The Killer Step Brother | World's Most Evil Killers | True Crime
It seems my daughter has gone missing.The Killer Step Brother | World's Most Evil Killers | True Crime
I felt sick looking at him, knowing what he did.The Killer Step Brother | World's Most Evil Killers | True Crime