William Marshall Sisco Jr., a 32-year-old man, went missing from Pima County, Arizona on June 12, 1994. At the time of his disappearance, he was in the Happy Valley area with two friends, panning for gold. An argument reportedly broke out between Sisco and his friends that evening because Sisco wanted to leave, and his friends did not. Consequently, Sisco departed the area alone and on foot, and has not been seen or heard from since.
At the time he went missing, Sisco was described as a
...Read MoreLast Seen: Jun 12, 1994
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