A mentally unwell man who admits killing his stepfather is reconsidering his plea after a judge became troubled upon hearing expert evidence. Tony Di Falco, 61, died outside his Hillside home in Melbourne's northwest on October 4, 2024 after he was stabbed by stepson Mehmet Bertan. When police arrived, they were confronted by Bertan armed with a knife. They tried to negotiate with him but fired a shot inside the home after he advanced on them.