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Crime Solvers Central
302 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 (MP10156) and 10 other sources
Dennis Cyncor-McMillan, a 17-year-old from Los Gatos, California, went missing on March 9, 2009, during a late-night swim at Davenport Beach in Santa Cruz County. He and a friend, along with a group of companions, had gone to the beach for a barbecue and overnight camping trip. Around 4 a.m., Dennis and another friend decided to swim from the shore to a rocky outcropping approximately 70 feet from the beach. While Dennis’s friend managed to return to shore, Dennis did not make it back. Despite being a strong swimmer and a participant in the Capitola Junior Lifeguards, the cold water and challenging conditions likely overwhelmed him. The ocean temperature was near 50 degrees Fahrenheit, and swells reached up to 12 feet that night.

Immediately following his disappearance, a large-scale search and rescue effort was launched by the California State Parks, U.S. Coast Guard, and other local agencies. Crews scoured the area, covering 50 square miles of ocean, but no trace of Dennis was found. Despite exhaustive efforts, the search was called off later that day. Due to the dangerous and unpredictable nature of the currents, Dennis is presumed to have drowned, though his body has never been recovered.

Dennis was a senior at Los Gatos High School and well-regarded by his peers. He was active in sports, playing as a wide receiver for the school’s football team. His passing marked a difficult period for the school, as he was the second football team member to die unexpectedly that year. In his memory, a scholarship was established at his high school to honor his life and legacy.

Last Seen: Mar 9, 2009

Possible Unidentified Matches (1)

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.

80%Moderate
John Doe — Brisbane, California - unidentified case UP12987
John Doe — Brisbane, California
UP12987 • Found Sep 17, 2014
View case
Sex ✓Male
Age 100%Est. 20–35 vs 17 when missing
Race 100%White
Location 90%49 mi away, same state
TimingFound 6 years after last seen
Height 100%6'0" vs 5'11"
Weight 87%175 lb vs 150 lb

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.