The folks at Mueller State Park clearly love a murder mystery as much as the rest of us. A 4.5-mile Murder Mystery Hike will chronicle the story of the unsolved disappearance of homesteader Sumner Osborn in 1941. Meet at the Homestead Trailhead at 4:30 p.m. Friday, 21045 Colorado 67, Divide, $10 day pass per vehicle required; 719-687-2366, cpw.state.co.us/event/2025/10/murder-mystery-hike. – Jennifer Mulson, The Gazette