Who Killed Marilyn McIntyre in Columbus? | Ice Cold Killers | S5 E1

An 18-year-old mother is found on her living room floor with a paring knife in her chest. In a town where doors rarely locked and winter bit hard, fear spread fast and suspicion fell on the person closest to her. But a tiny stain and a late-night phone call would change everything. Step inside Columbus, Wisconsin, as investigators chase a brutal 1980 murder through blizzards of rumor, a maze of suspects, and decades of doubt. Was it a jealous ex, a brother-in-law on the road at 3 AM, or the husband on a 3 AM break? Why was there no forced entry? And what did neighbors really hear when the dog’s chain rattled the porch? As the trail goes cold, a pinhead-sized blood stain resurfaces, a story shifts, and a “not on the phone” moment raises the stakes. Watch how a cold case team reopens a box of brittle notes, rebuilds a shattered timeline, and follows a chilling obsession to its breaking point—while one man fights to clear his name. Watch now to see the turn that finally thawed this case. #TrueCrime #ColdCase #MarilynMcIntyre #KurtForbes #ColumbusWI #IceColdKillers #DNAEvidence