48 Hours

At just 18 years old, C.C. Opanowski survived a vicious attack by her ex-boyfriend, Shawn Doyle, a man she once trusted and loved. Doyle pleaded guilty to menacing in the second degree and was sentenced to three years' probation. Opanowski tried to put the traumatic incident behind her until she learned years later that Doyle murdered Lori Leonard, a mother of two young boys. Now, for the first time, Opanowski shares her powerful story with 48 HOURS, speaking out about the attack, her long road to healing and the strength it took to face her attacker in court. Correspondent Anne-Marie Green reports on a case that spans nearly three decades in "Facing a Monster."

In June 1993, 35-year-old Jeanie Childs was found murdered in her apartment. Amongst the clues, there was a particularly unique one: bloody bare footprints. Investigators knew they had to belong to the killer because Childs had been found with her socks on. With no DNA match and no fingerprints to go on, the case went cold for decades. Years later, when the case was re-opened, investigators say those footprints helped them convict her killer.

In the season finale of 48 HOURS, a woman suspects her mother of a double murder. Years later, courtroom drama and new testimony reignite the case. 

Mike Sisco and his girlfriend Karen Harkness were gunned down in her Topeka, Kansas, home in 2002. Authorities believed it was a crime of passion. Sisco's daughter set out to help prove it was her mother, Dana Chandler, who was responsible.