Did Rhonda Karren's husband murder her and hide the body?

Rhonda Fae Karren

She was 31 when she went missing in Vernal, Utah on September 2, 1987.

She was last seen around10:30p.m. after dropping off a co-worker at their residence in Salt Lake City, UT. 

It is believed she returned to her residence in Vernal, UT. 

The following day, she was to open the Vernal K-Mart store at 7:30 a.m.  

There were signs of a struggle at her residence. 

She is considered a chain smoker, but left her cigarettes on the kitchen counter along with her purse, house and car keys. 

Audrey Slaugh, Victim's Mother: 

"Her purse and cigarettes were on the counter. That girl wouldn't even go to the bathroom without her cigarettes."

She was last seen wearing a sweater and black polyester slacks.

She is 5'4" tall, 120 lbs with Blonde hair and green eyes.

Rhonda has a mole on the lower right side of her chin and a discoloration on her leg.
Audrey Slaugh believes her daughter was murdered.

Rhonda was divorcing her husband at the time she vanished.

In 2006, Rhonda's husband, Mark Karren, was ordered to give up hair, blood and fingerprint evidence.

The theory is Rhonda was buried close to a 100 feet underground down a well and had acid thrown on her.

Detectives started drilling to try to find her.
A convoy of investigators headed out before dawn into remote ranch country near Dinosaur National Monument. 

Just across the Colorado line they focused on an old water well that was filled in years ago that was on property previously belonging to Rhonda's husband.

When the new owners tried to use the well, there was an awful stench coming from it and they found long human hair.

11 cadaver dogs picked up a scent directly on top of the well in 2002.

The investigations didn't turn up any evidence investigators could use.

Her case remains unsolved.