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

Case Description

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Summary based on the NamUs case record (MP6293) and 10 other sources
On a warm summer evening, July 31, 1974, in Mesa, Arizona, 15-year-old Cynthia 'Cindy' Ardina Leslie and her younger sister, 13-year-old Jackie Lynn Leslie, walked out of their family's mobile home and vanished. The Leslie family had recently relocated from Page, Arizona, to the Desert Sands Mobile Home Park in Mesa to be closer to medical facilities for their father, Jack, who was battling terminal cancer. That evening, while their parents were at a church service, Cynthia received a phone call. The sisters then left a note for their mother, Erma, stating they were going to a babysitting job. They were last seen walking west on Baseline Road, near Power Road, just a few blocks from their home. They never returned, leaving all of their personal belongings behind.

Investigators later discovered the babysitting story was a ruse; the girls had actually planned to attend a party. Cynthia reportedly wanted to meet up with a teenage boy whom her father had forbidden her from seeing. Accounts from those at the party were conflicting; some attendees reported seeing the sisters there, while others stated they never arrived. The area where they were last seen, which was then semi-rural with cotton fields and orange groves, has since been significantly developed, but extensive searches at the time and over the years have yielded no trace of either girl. Foul play is suspected in their disappearance, though concrete evidence has remained elusive.

The family has never given up hope for answers. Their mother, Erma, described the immense pain of not knowing what happened to her daughters, emphasizing that they were very close to their ailing father and would not have voluntarily left him during his illness. Tragically, their father passed away just months after their disappearance, never learning their fate. Decades later, the case remains cold, a painful and unresolved mystery for their surviving family. The Maricopa County Sheriff's Office continues to have the case open, and age-progressed photos have been released over the years in the hope that someone will come forward with information that could finally bring closure to the Leslie family. The disappearance of Cynthia and Jackie Leslie stands as a haunting example of a family's enduring love and the profound emptiness left by the unknown.

Last Seen: Jul 31, 1974

Possible Unidentified Matches (4)

Unidentified remains cases whose details are consistent with this person, ranked by how closely they compare. Fields that are unknown in either case are left out of the score.

77%Possible
Jane Doe — Near Casa Grande, Arizona - unidentified case UP67534
Jane Doe — Near Casa Grande, Arizona
UP67534 • Found May 19, 1980
View case
Sex ✓Female
Age 86%Est. 22–27 vs 15 when missing
Race 100%White
Location 93%35 mi away, same state
TimingFound 6 years after last seen
Height 84%5'2"–5'4" vs 5'6"
Weight 100%120–140 lb vs 109 lb
Hair 50%Blond vs Brown
77%Possible
Jane Doe — Mohave County, Arizona
UP85989 • Found May 18, 1975
View case
Sex ✓Female
Age 100%Est. 8–22 vs 15
Race 100%White
Location 62%166 mi away, same state
TimingFound 10 months after last seen
Height 84%5'3"–5'4" vs 5'6"
Weight 91%125 lb vs 109 lb
Hair 100%Brown vs Brown
77%Possible
Jane Doe — Scottsdale, Arizona
UP12148 • Found Oct 2, 1982
View case
Sex ✓Female
Age 100%Est. 15–19 vs 15 when missing
Race 100%White
Location 100%8 mi away, same county
TimingFound 8 years after last seen
Hair 100%Brown vs Brown
75%Possible
Jane Doe — Tolleson, Arizona - unidentified case UP2069
Jane Doe — Tolleson, Arizona
UP2069 • Found May 17, 1988
View case
Sex ✓Female
Age 100%Est. 25–35 vs 15 when missing
Race 100%White
Location 96%25 mi away, same county
TimingFound 14 years after last seen
Height 68%5'3" vs 5'6"
Weight 12%159 lb vs 109 lb
Hair 100%Brown vs Brown

These comparisons are generated automatically from public NamUs case data and are not confirmed identifications. Only DNA, dental or fingerprint comparison by investigators can confirm an identity. If you believe two cases are connected, contact the agency handling the unidentified case.

Unidentified photos are blurred because many are post-mortem. Tap a photo to reveal it.