NBC will air a special Friday about the secrets in their marriage that might have led to murder.
Stephanie was a mother of three and a well known member of the community. Dale is standing behind his claim that he did not murder his wife. In the Dateline special, he talks about why he never opted for a plea deal.
"'[Because] innocent people don't plea," Bruner told Dateline's Keith Morris.
Stephanie's body was found two years ago in a river after she was hit in the head and strangled.
"It's a cold November night. His wife goes for a walk, and he wouldn't call anybody until eight or nine hours later, ten hours later? That just doesn't make any sense," District Attorney Mark Hurlbert said.
According to Dale, he was nowhere near the scene of the crime.
"I was coming back from one of my photo shoots and a little unmarked car with a light on it flashed and a siren. They have guns drawn on me," Bruner said.
At the time, the couple was in the process of getting a divorce. Stephanie even filed a restraining order that was later pulled.
Friday's Dateline reveals Stephanie's relationship with another married man, and the bank robbery that happened close by the couple's home.
Colorado Bureau of Investigation Lead Investigator Greg Sadar questioned a number of suspects early in the investigation.
"This is one of those very few cases where it's a whodunit. I had at least three viable suspects," Sadar said.
However, Dale's Attorney Robert Bernhardt says the investigation never focused on anyone but Dale.
"Their position was, I think, Dale's the easy guy," said Bernhardt said.
The Dateline Special, "Secrets in the Snow," airs on NBC at 9 p.m.
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