Grandpa Weaves a Web of Lies But Nobody Is Buying It

On a September morning in western Colorado, a woman named Roxy Foster was killed by a single gunshot while driving a tractor on her own property. Her husband Mark was with her, setting up portable cattle panels. He told investigators he heard the shot, saw her slump forward, took cover behind a horse trailer, and then ran to get his phone from a nearby truck to call 911. By the time he reached her, she was gone. He tried CPR anyway. When a detective sat him down in an air-conditioned patrol car to get his account of what happened, Mark Foster began talking—and kept talking for hours. The story he told was sprawling, detailed, and full of potential suspects, but it was also shot through with contradictions, convenient gaps, and escalating claims that seemed designed to point a finger anywhere but at himself.

The interrogation begins

The detective made clear from the start that Foster was not under arrest and could stop at any time. Foster acknowledged he probably should have a lawyer but said he had nothing to hide and wanted to help get to the bottom of what happened. The detective asked for consent to search his property and house. Foster declined, saying he was "not unwilling but not willing just yet." He did agree to a gunshot residue test on his hands, and the detective noted blood on Foster's hands and swabbed it for evidence.