The Washington Post reports that Lindy Sue Biechler had seemingly just arrived home when she was attacked because her groceries were still on her dining room table. People reports that when her aunt and uncle found her, Biechler had a knife protruding from her neck, wrapped in a tea towel. The killer had used two knives in the attack, covering the entrance to the house with blood. According to PennLive, the murderer sexually assaulted Biechler after she was already dead.

Her family was devastated, and there were no leads, reports FOX43. Police interviewed 100 people in the first five days after her death and cleared Biechler’s husband and family members of wrongdoing. They would go on to interview between 250 to 300 people in the following years, but their investigation remained cold for decades. In 1976, Biechler’s tombstone was spray painted red and scratched up, and the next month, the alleged killer sent a note to police, but they couldn’t determine if the letter was legitimate or fake.

If you or anyone you know has been a victim of sexual assault, help is available. Visit the Rape, Abuse & Incest National Network website or contact RAINN’s National Helpline at 1-800-656-HOPE (4673).

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