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Anthony Sherwin, 23, of Nebraska shot, stabbed and strangled married couple Tyler and Sarah Schmidt, both 42, and their daughter Lula, aged 6 at Maquoketa Caves State Park on July 22.
A nine-year-old boy, Arlo Schmidt, survived the massacre of his family while on a camping trip in Cedar Fall, Iowa. The lone survivor sought help from the mom of the suspected killer and described the killer as "clad in black."
Arlo Schmidt, 9, is the sole survivor of the horror incident, in Maquoketa Caves State Park in Maquoketa, Iowa, with his aunt saying that he has a lifetime of trauma ahead of him.