The "mutual friend," Paige Blades — who speaks out exclusively to Dateline about the case in the broadcast — told police that she was having a three-way relationship with the married couple. “I had a ...

The mutual friend in question, Paige Blades, spoke with Dateline for the episode. Blades' friend, Marty Grismer, was convicted of murdering Desiree Sunford in 2017. He took an Alford Plea and was ...