Troy Roberts

There were signs that Sabrina had been sexually assaulted. John had a head injury suggesting he fought to protect her. Eighteen, they're just children.

There were signs that Sabrina had been sexually assaulted. John had a head injury suggesting he fought to protect her. Eighteen, they're just children.

There were signs that Sabrina had been sexually assaulted. John had a head injury suggesting he fought to protect her. Eighteen, they're just children.

I understand that you wake up in the middle of the night thinking of your son.

I understand that you wake up in the middle of the night thinking of your son.

I understand that you wake up in the middle of the night thinking of your son.

The case became known as the Sweetheart Murders. Investigators from two counties mobilized to hunt down this sadistic killer, but they had no idea just how difficult that would be.

The case became known as the Sweetheart Murders. Investigators from two counties mobilized to hunt down this sadistic killer, but they had no idea just how difficult that would be.

The case became known as the Sweetheart Murders. Investigators from two counties mobilized to hunt down this sadistic killer, but they had no idea just how difficult that would be.

As the town of Davis said goodbye to the two sweethearts, their chilling murders had police fearing a serial killer could be on the loose.

As the town of Davis said goodbye to the two sweethearts, their chilling murders had police fearing a serial killer could be on the loose.

As the town of Davis said goodbye to the two sweethearts, their chilling murders had police fearing a serial killer could be on the loose.

Investigator Ron Garverick is with the Sacramento District Attorney's Office.

Investigator Ron Garverick is with the Sacramento District Attorney's Office.

Investigator Ron Garverick is with the Sacramento District Attorney's Office.

Police received hundreds of tips. They even released this composite sketch of a suspicious man spotted in the area.

Police received hundreds of tips. They even released this composite sketch of a suspicious man spotted in the area.

Police received hundreds of tips. They even released this composite sketch of a suspicious man spotted in the area.

This is the kind of rough brush that the bodies were found in? Yeah. It's just by luck that the officers found the bodies, right?

This is the kind of rough brush that the bodies were found in? Yeah. It's just by luck that the officers found the bodies, right?