48 Hours on ID

Andra and Brad Sachs are shot dead in their California mansion, while their 8-year-old son is wounded by a bullet; investigators cannot pin the crime on a business deal gone bad and look closer to home.

When George Tiaffay finds his estranged wife, Shauna, murdered in her home, he has an ironclad alibi, and it will take a tip from an unlikely source to crack the case; Peter Van Sant reports.

In November 1994, Farah Fratta's body is discovered in the garage of her Humble, Texas, home, and the details of her divorce papers reveal that her soon-to-be ex-husband has a dark side, making him a prime suspect in her murder.

David Temple was in prison for life for his wife's murder when an appeal in 2015 gave him reason to hope; it consisted of evidence his lawyer never received from the state, which could have changed the verdict.

Robert Durst gives an interview to L.A. prosecutor John Lewin touching on the murder of Susan Berman; this conversation may play a role in the case against Durst, who is accused of killing Berman.

In 2001, Missouri newspaper editor Kent Heitholt is found bludgeoned and strangled to death on Halloween night; then, two years later, 19-year-old Charles Erickson has a dream that he and his friend, Ryan Ferguson, participated in the crime.

Two teenage girls are murdered six years apart on San Diego's popular Torrey Pines State Beach, and investigators are stymied for years, querying whether these two cases are connected.

U.S. Army soldier Skylar Nemetz shoots his 19-year-old wife, Danielle, then claims he misfired his rifle and killed his wife by accident.

After Dr. Gilberto Nunez is accused of killing Thomas Kolman, investigators must determine why the dentist would poison a man he says was his best friend.

Some anonymous messaging applications have proved dangerous to teenagers because they can be used by sexual predators; two teenage girls fall into the trap posed by these applications and their online relationships become a matter of life and death.

A serial rapist spreads his net wide, choosing his victims from all over the Denver area; now, he is about to be outsmarted by a pair of female detectives from different police departments.

Teenager Sophia Putney-Wilcox's relationship with her high-school boyfriend, Adam Shigwadja, becomes abusive, and he is arrested for threatening her with a knife, but there's nothing the court can do until all hell breaks loose.

Young Tennessee mother Shelley Mook is last seen by her 6-year-old daughter entering the home of ex-husband Tyler, but with no body, no crime scene and no hard evidence, police cannot make a case against him.

Cory Lovelace is found dead in bed one morning, and the cause of her death is ruled undetermined; however, questions persist about why her body was in an advanced state of rigor mortis when her children had seen her alive that same morning.

After Julie Kibuishi is found dead in Sam Herr's empty apartment, police suspect him of killing Kibuishi, even though his father refuses to believe it and leads detectives to one of his son's friends.

In Indiana, Darryl Pinkins and Roosevelt Glenn are convicted of committing a notorious 1989 gang rape, a crime they claim they didn't do; it will take years for a group of experts to finally see justice.

Twenty years after Italian fashion designer Gianni Versace's murder, it is still a mystery whether he knew his killer, Andrew Cunanan, who was responsible for four other murders and committed suicide before he could be captured.

What began as a missing persons case in the late summer of 2016 evolves into the story of serial killer Todd Kohlhepp; to avoid the death penalty, the former real estate broker pleads guilty to seven murders.

In 2015, David Temple's conviction for his wife's 1999 murder is overturned because the state withheld evidence from the defense.

Before her sudden death, true-crime writer Michelle McNamara, wife of comic Patton Oswalt, was obsessed with trying to find the Golden State Killer, who terrorized Californians between 1979-1986.

Texas oilman Cullen Davis stands trial for a 1976 ambush that claimed the lives of his stepdaughter and his estranged wife's boyfriend.

In a story of race, money and celebrity, O.J. Simpson was found not guilty of killing ex-wife Nicole and her friend Ron Goldman in 1995. Now free after serving nine years for armed robbery many wonder if he will live out his life quietly. James Brown reports.

It was a case where nothing was as it seemed. When holistic physician Teresa Sievers was brutally murdered inside her Florida home, authorities would find clues to the crime in Missouri, 1100 miles away. Erin Moriarty reports.

For nearly 25-years, California sisters Tippy Dhaliwal and Jeanette Marine have been on a mission to keep their step-father Dennis Ott in prison and deny him parole for the murder of their mother Phonthip Ott. Tracy Smith reports.

Despite multiple investigations, Kay Wenal's 2008 murder remains unsolved with still no suspect and no motive for the crime. But detectives believe someone out there knows something that can help police crack this case. Erin Moriarty reports.