83-year-old grandfather Jack Rains is brutally murdered at his home in Murfreesboro, Tennessee. When rumors emerge of an affair between the victim and a women half his age, police start to investigate his close friends.

Elderly couple Roy and Angie Woodley are found stabbed to death in their California home. Initially believing the crime to be a robbery-gone-wrong, detectives soon realize the perpetrator may be a family member with a grudge.

When detectives find blood in the car of missing mom Tami Reay, they arrest her husband, Brad. But then they receive a tip that points the finger at a new suspect. Could they have arrested the wrong man?

Joe Morrissey is brutally killed in what appears to be a home-invasion robbery. But closer inspection leads detectives to believe the attack was personal. The hunt is on for suspects -- including Joe's wife, Kay.

After Melissa Atkin is found bound and murdered in her home in Tennessee, investigators focus on two individuals. But a series of recorded phone calls may prove vital in exonerating one and incriminating the other.

Father of two, John Riebe, is found dead on the floor of his home in Toledo, Ohio. The investigation quickly turns on those closest to John, and a series of phone calls and voicemails prove key in uncovering a shocking betrayal.