COEUR D'ALENE, Idaho -

One of the most scenic and popular locations in Coeur d'Alene – Tubbs Hill – will always have the shadow of a cold case it. Twenty-seven years later though police still believe someone out there knows something that can help find two women.

Disappearing without a trace is impossible. There's always a clue, a person of interest or a hint that in hindsight will reveal what happened to a missing person. But for nearly three decades now, that's never been the case for Deborah Jean Swanson and Sally Anne Stone.

"We have vowed that we will never give up hope, we will keep looking," Sergeant Christie Wood with the Coeur d'Alene Police Department said.

Every year, Wood tries to dredge up clues in this very cold case. She's hoping interest in the recent story out of Ohio, where three missing women were found alive in a home near where they were abducted, will lead to a break in Swanson and Stone's case.

"The Ohio women are in the news and we certainly hope that spurs the public interest to remember back in 1986 what did they see? What did they know? Was there somebody suspicious?" Wood said.

On March 29th 1986, 31-year-old Deborah Swanson went for a jog at Tubbs Hill. She left her car and belongings in the parking lot, but never returned.

Two months later, on May 16th 1986, 21-year-old Sally Anne Stone didn't show up to a doctor's appointment. Her car and belongings were found at her home.

"Somebody knows what happened to these three women, they didn't just walk off the face of the earth," Wood said.

Thirty years is a long time to hold out hope, but Wood keeps fighting for answers. She spoke with Stone's mother two years ago and says her grief is just as strong as it was the day her daughter disappeared.

"It's time to come forward because these parents, these families have a hole in their heart and we need to do the right thing," Wood said. "Any small detail, we'll listen to everyone."

Wood and the victims' families will wait 30 more years if they have to because it might lead to that one phone call that answers the question on their mind: How do you disappear without a trace?

"I think John Walsh is the one who always says 'don't give up' and I think that's the best thing you can do for your loved one it don't give up, at some point we will get to the bottom of what happened," Wood said.

The Coeur d'Alene Police Department can be reached at 208-769-2320. You can remain anonymous.