On "The Devil You Know," viewers got an inside look at the horrible 2001 murders of 34-year-old Jennifer and 6-year-old Abby Blagg, a mother and young daughter. Jennifer’s husband, Abby’s father Michael, was convicted of killing his wife after a lengthy investigation, though he maintained his innocence throughout.
In 2004, Michael was found guilty of his wife's murder, and in 2008, the Colorado Court of Appeals upheld his conviction. He was sentenced to life in prison.
See more shocking true crime stories every Wednesday on "The Devil You Know" at 10 p.m. ET on ID.
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