Shan’ann Watts disappeared from her Colorado home with her two young daughters, 4-year-old Bella and 3-year-old Celeste, in August 2018. Her husband, Chris, appeared to be a grieving husband and father baffled by the disappearance, pleading for the public’s help to find them.

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Days later, Watts confessed to his father, while in police custody, that he murdered Shan’ann in a fit of rage, claiming she killed their children. It was reported that Watts killed his family because he was having an affair with a co-worker.

The bodies of his pregnant wife and daughters were found on a property owned by the company he worked for. Watts was charged with three counts of first-degree murder and three counts of tampering with evidence – and was sentenced to life in prison.

WATCH: 'Shan'ann Was A Good And Loving Mother, Had Not One Thing To Do With This,' Dr. Phil Says Of Woman Whose Husband Killed Her And Their Daughters

Hear more of this news-making story in the video above.

Recently, Watts made a new jailhouse confession to authorities, reportedly disclosing what he says really happened in his wife and daughters’ final moments. On Tuesday’s episode of Dr. Phil, days before the audio of that confession is expected to be released, Dr. Phil exclusively reveals the devastating details Shan’ann’s parents say are on that tape. And on Monday, Dr. Phil has an exclusive interview with Shan’ann’s parents, Sandy and Frank, along with her brother, Frankie Jr. Hear their first reaction to Watts’ latest confession. Check here to see where you can watch.

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What Chris Watts’ Latest Confession Allegedly Reveals About Night He Killed Pregnant Wife And Two Daughters