On the Case with Paula Zahn (2009)

Season 5: Episode 2

Margo Prade, a prominent doctor in Akron, OH, is discovered shot and killed in her van parked outside her office. Margo was one of their own, married for 17 years to a highly respected captain in the Akron Police Department. Investigators quickly discover a videotape that documents the murder, but the most important clue is a bizarre bite mark left behind by the killer.