Karl Karlsen was already serving time for the 2008 death of his son Levi when authorities re-opened their investigation into his wife Christina's 1991 death.
Jared Charles Noiman allegedly told police he'd been in a fight but didn't want to press charges. Hours later, police discovered his father's body in a Boca Raton parking garage.
Michael Valva, a New York City police officer, is accused of killing his son by forcing him to spend a frigid night in an unheated garage while temperatures plunged to 19 degrees.
Lori Vallow Daybell has failed to report to the authorities with her children in tow, prompting even more concern for Joshua “JJ” Vallow and Tylee Ryan, who were reported missing in November.