At first, it appeared real estate entrepreneur Shannon Hercutt died after her Cadillac plunged in August 2009 over a Sevier County, Tennessee cliff.

Several days later, police realized she’d actually been killed and the crash made to look like an accident.

Hercutt’s sister accused their father of hiring someone to kill Shannon. Authorities, however, don’t think that’s true.

Thousands of dollars in reward money remains available for the tip that breaks the case. The killer, however, still walks free.