Family and friends gathered Saturday in North Carolina to say goodbye to a pregnant Frederick woman and her two preschool-age daughters who were killed last month. Shanann Watts, 34, was found in a shallow grave and daughters Bella, 4, and Celeste, 3, were found in an oil tank days after they were reported missing. Police arrested Shanann's husband Chris, after he had been interviewed by several local news stations about his family's disappearance. He now faces nine felony counts, including five counts of first-degree murder and one count of unlawful termination of pregnancy. Tonight, we uncover new information about what Chris is doing behind bars-and we reveal actual video of the baby monitor in the Watts home. Is his story about seeing his wife strangle their kids through the baby monitor even plausible? And what clues do the caskets at their funeral reveal about how they may have died?

Is accused killer dad Chris Watts now starting to 'mourn' for his murdered family? New shocking details about what he's doing behind bars are revealed tonight.

Crime & Justice with Ashleigh Banfield takes a look at the daily stories of mystery and justice, and examines some of America's most shocking crimes that we just can't forget. Mon - Thu 6p - 8p on HLN.

Personal Journals

Society & Culture

History

Philosophy

Places & Travel

Sources say that Chris Watts, the man suspected of murdering his wife, Shanann, and two daughters, Celeste and Bella, is now under suicide watch in the Weld County Jail. Watts, who told local news stations he had "no inclination" of where his wife and daughters were just days before their bodies were found, is reportedly under "close watch protocol" so that he does not harm himself. Days after the funeral and burial of the victims cause of death and autopsy results have still not been released. With hours of home videos posted on social media portraying what appears to be a happy family, two major questions remain-if Chris Watts did commit the crimes he is accused of, how did he do it? And most mystifying of all-why did he do it? Plus, we'll be addressing some questions from our own Facebook community about this tragedy and mystery that has gripped the nation.

Cops chasing new leads in massacre? Cops: Dad buried wife, put kids in oil tanks. 'Family man' now a triple murder suspect. Accused killer hubby's secret life exposed?

A motive in the murder case has not been confirmed as allegations of Chris' infidelity draw greater scrutiny. Those who know the Watts family have described a seemingly happy union possibly beset by mounting tension. "It's beyond belief, really," friend  told PEOPLE. "And it makes you wonder about other people you know. If this couple who seemed so perfect was like this, what are the other couples like?"

Was Affair Motive In Alleged Family Massacre?

Crime and Justice producers reaches out to a former lover of Chris Watts, a father who is accused of murdering his wife and two daughters.

Alleged Former Lover Of Chris Watts Speaks Out

A Denver criminologist has claimed that the father accused of murdering his pregnant wife and their two children did so because he wanted to start a new life with his lover.

Is accused killer dad Chris Watts now starting to 'mourn' for his murdered family? New shocking details about what he's doing behind bars are revealed tonight.

Download our free app to listen on your phone