Rich's unsolved murder has spawned numerous conspiracy theories, including those accusing the FBI of a sinister cover-up.

One person was initially reported dead after the shooting, but a second victim succumbed to their injuries hours later.

"Watching that dead time helped us. I was 100 percent convinced at that point," one of the police officers said.

An Arizona church worker was preaching the gospel on a busy street corner when someone pulled out a gun and shot him.

It's disturbing, and it's awful, and it's sad. And it's a felony charge. The abuse of a corpse," a sheriff's department spokeswoman said.

Thieves hit Donald Trump's Florida golf resort twice in the same day. But did they have help on the inside? Police are investigating.

"Ryan was a beloved staffer, colleague and friend, and a creative, talented, relentless and upbeat advocate for students and the environment."

Careful detective work gradually led authorities to center on one suspect in the decade-old unsolved serial killings.

“I never thought he was anything but a businessman, average guy who had a family and went to work,” one neighbor said.

A decade-and-a-half-old unsolved murder may not be fully solved yet, but a guilty conscience has led to a major breakthrough.