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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 late morning of September 22, 1979, in the Martineztown neighborhood of Albuquerque, New Mexico, nine-year-old Mary Lou Sena and her eleven-year-old cousin, Billy Sena, vanished without a trace. The two children were last seen together near Edith Road and Mountain Road, having received permission to go play on the grass at the local post office. Mary Lou, a fourth-grader at Longfellow Elementary School, was wearing a red halter top at the time of her disappearance. She and Billy, a sixth- ...Read More
Last Seen: Sep 22, 1979

Victim Details

Jan 27, 2026

Jan 27, 2026

Mary

Lou Sena

9

9

4'5 inches

50 lbs

Hispanic

Female

Sep 22, 1979

Albuquerque

New Mexico

Albuquerque

Albuquerque Police Departmen

505-242-2677

05/23/2026