Patrick Clancy, the children's father and Lindsay Clancy's ex-husband, is due to speak publicly about the case in an interview with the CBS programme 60 Minutes on Sunday.In it, he is expected to discuss his grief, his memories of his children and the conspiracy theories that have flooded social media since the trial began.He said he still speaks to his children "all the time", describing it as "a way I stay connected to them".During the trial, Clancy's defence team had attempted to use her being put on more than a dozen medications in the lead-up to the killings, as well as seeking help from a suicide hotline and an emergency room, as evidence of her psychosis.Postpartum psychosis can involve hallucinations and delusions, and her lawyers argued that she was unable to understand the nature of her actions or distinguish right from wrong.A forensic psychiatrist who testified for the defence said Clancy experienced a "command hallucination" and a "delusion of influence" when she killed her children.However, her psychiatrist testified for the prosecution that Clancy did not show signs of psychosis during their sessions, while another psychiatrist noted that the condition was not currently recognised by the American Psychiatric Association.Under Massachusetts law, prosecutors had to prove beyond any reasonable doubt that Clancy was criminally responsible for the jury to find her guilty. The defence did not have to prove her mental illness or lack of criminal responsibility.The mistrial leaves the case unresolved. Prosecutors have not said whether they will seek a retrial.Clancy's lawyer, Kevin Reddington, has said he hopes to reach an agreement with prosecutors to avoid a second trial.He told ABC's Good Morning America that he was upset that the lone juror would not acquit Clancy.He said the holdout "would not apply the law of reasonable doubt" as instructed by the judge, adding: "That's not right. And that's why I was upset."The next court hearing is scheduled for 29 September at Plymouth Superior Court in Massachusetts.