A separated father killed his six-year-old son and then himself after telling his ex partner: 'You'll never see him again,' an inquest has heard.
Chris Hall was embroiled in a custody battle over his son, also called Chris, after his former partner Rachel Wild left him.
The boy had been living with his father ahead of a custody court case.
Miss Wild told how her ex 'lost it' when he spotted her with her new boyfriend in her car the last time she dropped her son off at Hall's house.Hall dragged his son from her and told her: 'I will take him to a place where you will never see him again.'
Two days later Miss Wild received a note from her ex telling her to come to the former family home.
The court heard how she rushed round there and let herself in but then left after a few minutes because it felt 'eerily quiet'.
She called the police and officers arrived and discovered the father and son dead in bed, lying side by side.
Mr Hall had given his diabetic son a fatal mixture of insulin, morphine, and sleeping pills before overdosing on painkillers.
Describing the last time she had seen her son alive, Miss Wild said:
'He didn't want to go back [to Hall's] and when we got round the corner we noticed Chris leaning against the wall.
'Chris stormed over, opened Little Chris' door and dragged him out at started shouting abuse.
'It was aimed at me in anger. He said 'you've been sleeping with this man, you've been sleeping with him in front of Little Chris.'
'He said 'basically, you'll never see Little Chris again, I will make sure of it.' He said: 'I will take him to a place where you will never see him again.'
'I thought he meant was going to take him to his brother Duncan's.
'I felt like I wanted to go back and get Little Chris but you have got to do things by the law.'
The Bournemouth inquest heard that Mr Hall had suffered from depression in the past and had slit his wrists on three occasions.