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William Sisco, Jr. Missing Person Case

Last seen in Happy Valley, Arizona on Jun 12, 1994

Victim Details

Mar 26, 2015

Aug 13, 2019

William

Sisco, Jr.

64

32

73 inches

165 lbs

White / Caucasian

Male

Jun 12, 1994

Happy Valley

Arizona

Pima County

16457

Pima County Sheriff's Department

Tucson

Arizona

Pima County

85714

1750 East Benson Highway, Arizona

5203514600

County

Law Enforcement

https://www.pimasheriff.org/

Pima County Sheriff's Department

Blond/Strawberry

Hazel

Hazel

07/12/2026


Area Last Seen:

Case Description

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Sisco was last seen panning for gold with two friends in the Happy Valley area of Pima County, Arizona on June 12, 1994. That evening he got into an argument with his friends; he wanted to leave and his friends did not. Sisco left on foot and alone. He has never been heard from again.

Sisco had two warrants out for his arrest when he disappeared; one of his friends believes he left of his own accord to avoid having to go to prison. Investigators, however, believe Sisco may have met with ...
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Last Seen: Jun 12, 1994

Links to Additional Sources (2)

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  • Missing Person / NamUs
  • William Marshall Sisco Jr. - The Charley Project

    • Latest News

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    Forum Posts (3)

    Hey everyone, I've been digging around trying to make sense of the Sisco case and something that jus... ...Read More
    09/14/2024
    Does anyone have more information on the Happy Valley area in Pima County around the mid-'90s? I’m... ...Read More
    05/13/2024
    I’ve always been intrigued by the mysterious disappearance of Sisco back in '94. Just want to poin... ...Read More
    07/14/2023
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