Exactly why Andy Cash inflicted such depraved violence on his three siblings may never be fully known

Victims Chelsea Cawley, Lisa Cash and Christy Cawley

Robin Schiller

Footage from bystanders and testimony given in court revealed the true scale of the horror that unfolded in a small Dublin housing estate where two children and a teenager were murdered at the hands of their older brother.

The agonising cries of a woman could be heard as armed gardaí pleaded with the killer to desist, screaming at him: “Andy, show us your f***ing hands.”