Saturday

Police receive a frantic 911 call about a woman who witnessed a murder. But during her interrogation, detectives begin to wonder - was she the victim or was she the killer?

Border patrol agents discovered the bodies of a young mother and her toddler son along the Rio Grande.  Detectives closed in on a surprising suspect.

Tiffany and Keland Hill were military veterans with a shining service history. But while mum of three Tiffany still lived to serve, Keland lived simply to control, stalk and terrorise his wife. He was known to be extremely violent, but no one predicted his final act of brutality.

Aliny and Ricardo Godinho had four children, and a relationship history that spanned 17 years and at least two continents. While Aliny put her kids at the centre of everything she did, for Ricardo they were a morbid obsession, and one that would eventually lead to a crime of shocking brutality.