Coroner Dr Robert Hunter is going through every piece of evidence, witness by witness, heard over the past five weeks.
He first reminded the jury of the concerns of both Andrew Cairns' and Rachael Slack's families about Mr Cairns' state of mind.
Both Hazel Slack, Miss Slack's mother, and Diane Belshaw, Mr Cairns' sister, told the court how he often spoke of having suicidal thoughts. Mrs Belshaw had recalled a family Christmas in 2008 when her brother seemed agitated and looked "dead behind the eyes".
A Coroner's report has made recommendations after an inquest found Rachael Slack and her son were unlawfully killed by her former partner.
A timeline of the events surrounding the stabbing of Rachael Slack, Andrew Cairns and their two-year old son, Auden.
The inquest on a mentally ill patient found stabbed to death with his ex-partner and their son in Derbyshire will hear further evidence.