India, Sept. 21 -- Lindsay Clancy's ex-husband, Patrick Clancy, spoke out for the first time since a mistrial was declared in the case. On Sunday night, September 20, he told CBS' 60 Minutes that he believes he did everything he could to protect his children, but admitted that he did not know how to manage his ex-wife's postpartum illness.

Patrick took the stand on the first two days of the trial and testified about finding his kids fatally injured and Lindsay's struggles with mental health. He was recognized as a grieving father and a key prosecution witness.

Here are five key takeaways from Patrick's 60 Minutes interview.

The judge in Lindsay's trial declared a mistrial after the jury could not reach a unanimous verdict and remained ...