Susan “Susie” Casey was a 34-year-old mother of four living in the small town of Glendive, Montana. One cold spring morning in 2008, she disappeared just “20 steps from her apartment” where her children were waiting for her return. When Susie didn’t return phone calls from her brother and sister-in-law, they went to the police. A search ensued. One month later, Susie Casey’s body was found in the Yellowstone River. Someone strangled her with “considerable force.”
There were three main suspects – the three men in her life. At the time of her death, Susie was headed toward divorce with her second husband Ted Casey. She had spent the night (before she was killed) with her new boyfriend, Brad Holzer. And then there was her first husband, Walter “Marty” Larson, Jr. That early morning when Susie disappeared, Larson was sitting in his car outside of Susie’s apartment. He watched her get dropped off at 5:20 am with her coat disshelved and her bra slung over her arm. Larson had a history of stalking Susie. In 1998 he showed up at Ted and Susie’s house in the middle of the night with a shotgun. After a four-year investigation into the murder of Susie Casey, Larson was charged with Susie’s death in 2013. He is serving 110 years in prison. Dateline NBC airs Fridays at 9pm.