Unsolved. Shenandoah and Acadia National Park.

Lace up those hiking boots and get ready to enter Shenandoah and Acadia National Park. In the first episode of National Park After Dark, listen along as Cassie and Danielle tell the tragic tales of Julianne Williams, Lollie Winans and Leslie Spellman – three women who came to explore these parks, but never left.

As of June 20, 2024 Julie and Lollie's case has been officially solved. Link to the FBI announcement here.

Sources  Death in Acadia: And Other Misadventures in Maine's National Park. Fox Bangor. Savage Watch. Appalachian Trail Mysteries. NBC Washington. Blue Ridge Outdoors. Strange Outdoors.