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251 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.

Case Description

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In the early summer of 1997, a 31-year-old woman named Julia Ann O'Neill vanished from the resort city of Lake Geneva, Wisconsin. She was last seen on June 18, 1997, and since that day, there has been no contact with her. The circumstances surrounding her disappearance are shrouded in mystery, with very few details available to the public or to investigators. At the time she went missing, Julia was described as a white female with brown hair and green eyes, standing between 5'8" and 5'9" tall an ...Read More
Last Seen: Jun 18, 1997

Victim Details

Jan 28, 2026

Jan 28, 2026

Julia

Ann O’neill

31

31

5'8 - 5'9 inches

135 lbs

White

Female

Jun 18, 1997

Lake Geneva

Wisconsin

Lake Geneva

New Berlin Police Departmen

262-782-6640

05/21/2026