A forensic examiner has handed Los Angeles police a fingerprint card from 1943 that belongs to a former boyfriend of Elizabeth Short, the woman whose gruesome 1947 killing became one of America's most infamous unsolved murders. The card, tied to a man named Marvin Margolis, now sits with LAPD's cold case detectives for review.
Short was 22 years old when her body was found on January 15, 1947, in a vacant lot in the Leimert Park neighborhood of Los Angeles. Her remains had been severed at the waist, drained of blood, and posed. The case earned the name "Black Dahlia" and has resisted resolution for nearly eight decades. No one has ever been charged.
Now, independent forensic examiner Alex Baber says he obtained a government fingerprint card for Margolis, who was one of 22 persons of interest identified by investigators in 1951. Margolis had dated Short before her death. The Sun first reported that Baber submitted the card to LAPD for comparison against latent prints collected from the original crime scene and Short's personal belongings.
Margolis appeared on the 1951 list of persons of interest compiled during the original investigation. He had a prior relationship with Short, though the precise nature and timeline of that relationship remain unclear from available records. Investigators at the time apparently looked at him but never filed charges against him or anyone else.
The fingerprint card itself dates to 1943, four years before Short's killing. Baber located it through government records, though the specific agency that originally collected the prints has not been publicly identified. The card's age and provenance will be part of what detectives evaluate as they determine whether it holds forensic value.
Cold cases that stretch back decades often hinge on whether physical evidence survived and whether modern techniques can extract new information from old material. Advanced forensic strategies have been floated in other stalled investigations, but the Black Dahlia case presents a particular challenge: most of the physical evidence is extremely old, and every witness from the era is dead.
Detective Marty Mojarro, who handles the case for LAPD's cold case unit, told Fox News that the fingerprint evidence still needs vetting but that he sees no reason to reject a potential lead in a case this barren of physical clues. With no living witnesses to interview, any recoverable forensic material takes on outsized importance.
"As an investigator, if it potentially could help, I would absolutely not turn it down."
Mojarro was blunt about the difficulty of the task. The passage of time has stripped away nearly every investigative advantage detectives normally rely on. Witnesses are gone. Memories are gone. What remains is whatever physical evidence was preserved and whatever records survived decades of storage and transfers.
"This is probably one of the most difficult cases, realistically, because of the time that's passed."
That candor matters. Mojarro is not promising a breakthrough. He is saying the lead deserves serious examination precisely because so little else remains to work with.
A fingerprint card, by itself, does not solve a murder. Detectives will need to determine several things before the Margolis prints carry any weight. First, they must confirm the card is authentic and that the prints on it are legible enough for comparison. Second, they need usable latent prints from the original crime scene or from Short's belongings that were preserved in a condition suitable for modern analysis.
If both sets of prints meet quality standards, examiners can attempt a match. A positive match would place Margolis in physical contact with evidence connected to the crime, but it would not, on its own, prove he killed Short. Context matters. A former boyfriend's prints on personal items could have an innocent explanation.
A negative result, on the other hand, would not clear Margolis either. It would simply mean his prints were not found on whatever evidence survived. The absence of a match in a case this old says less than it might in a fresh investigation.
The forensic challenge mirrors difficulties seen in other long-cold cases. A 1982 Louisiana murder case recently moved forward after decades only because fresh investigative work uncovered leads that had been missed or ignored. In the Black Dahlia case, the question is whether 80-year-old physical evidence can still speak at all.
The Black Dahlia murder has generated more theories, books, and amateur investigations than perhaps any other unsolved American killing. Over the years, various researchers have pointed fingers at doctors, journalists, hotel owners, and even family members of law enforcement officials. None of these theories has produced charges.
The 1951 list of 22 persons of interest represented the LAPD's best thinking at the time, but the department never narrowed the field to a single suspect with enough evidence to prosecute. Margolis was one name among many. His inclusion on that list does not indicate that investigators viewed him as the prime suspect, only that he warranted scrutiny.
Researchers have also explored possible connections between the Black Dahlia case and other unsolved crimes from the same era. One researcher has even claimed a link between a cracked Zodiac cipher and a suspect with ties to the Black Dahlia killing, though that theory remains unverified and outside the scope of the current LAPD review.
What separates Baber's submission from the usual flood of amateur tips is that it involves actual physical evidence tied to a named person of interest from the original investigation. This is not a new theory or a reinterpretation of old witness statements. It is a government-issued fingerprint card for a man LAPD already identified as worth examining in 1951.
That does not make it a smoking gun. It makes it a credible piece of forensic material that trained examiners can evaluate using objective methods. The distinction matters in a case that has been buried under speculation for generations.
Investigators in other difficult cold cases have faced similar dynamics, where institutional disputes and evidence-handling questions complicated efforts to build momentum. In at least one long-running case, a retired lieutenant alleged that investigators downplayed key connections to block federal involvement. Whether similar institutional obstacles affected the Black Dahlia investigation over the decades is a question that has never been fully answered.
Mojarro and his team will now do the painstaking work of vetting the prints. If the card checks out, comparison work could take weeks or longer, depending on the condition of the original latent evidence. LAPD has not set a public timeline for results.
The realistic outcome is that this lead either produces a partial answer or joins the long list of promising threads that went nowhere. Fingerprint comparison is binary in one sense: prints match or they do not. But in a case with this many gaps, even a match would raise more questions than it answers.
Authorities have not publicly confirmed whether other forensic techniques, such as DNA analysis, could be applied to surviving evidence. Modern genealogical DNA methods have cracked dozens of cold cases in recent years, but those methods require biological material, and it is unclear whether any usable biological evidence from the Black Dahlia scene still exists.
For now, the case sits where it has sat for 78 years: open, unsolved, and haunted by more theories than facts. The difference today is that a detective is willing to look at what a forensic examiner found, and the evidence in question is not a theory. It is a card with a dead man's fingerprints on it.
Seventy-eight years is a long time to wait for justice. If LAPD's cold case unit treats this lead with the rigor it deserves, the Black Dahlia case may finally get something it has lacked for decades: an answer grounded in evidence, not speculation.
