Cold-Case DNA Nails Killer

Rubber stamp with the words COLD CASE next to a stamped impression — Photo: Castleski / Shutterstock

Utah officials say preserved DNA has now tied Ted Bundy to the 1974 killing of 17-year-old Melissa Ann Smith, closing a half-century mystery with science and finality.

Story Snapshot

Summit County closed Smith’s 1974 homicide after new DNA testing connected it to Ted Bundy.
Utah State Crime Lab analysts reported a male-line Y-chromosome DNA link between Smith and victim Laura Aime, whose profile matched Bundy.
Prosecutors cited DNA plus pattern, means, and opportunity to name Bundy as Smith’s killer.
The announcement highlights how modern testing is solving cold cases decades later.

Utah closes Melissa Ann Smith’s case with a DNA-backed conclusion

Summit County leaders announced that modern DNA testing connects Ted Bundy to the 1974 murder of Melissa Ann Smith, the 17-year-old daughter of the Midvale police chief. The sheriff and county attorney said the Utah State Crime Lab developed a genetic profile from preserved evidence and linked it to Bundy through a chain that also includes fellow Utah victim Laura Aime. Officials declared the case closed and said the evidence supports Bundy’s responsibility beyond investigative doubt.

County Attorney Margaret Olson stated that the DNA evidence, considered with Bundy’s known pattern and access, establishes that Bundy killed Smith. Reporters from national and local outlets described a clear throughline: a Y-chromosome profile associated with Aime matched Bundy’s archived Florida profile, and the same male-line profile appeared in evidence from Smith. That combination, plus established case history, drove the public declaration of closure.

How the Y-chromosome link builds the bridge to Bundy

Investigators explained that they used Y-chromosome short tandem repeat testing, which tracks markers passed from father to son. The Aime evidence carried a male-line profile that had already matched Bundy’s reference profile. When analysts found the same male-line profile in Smith’s evidence, it knitted the two Utah murders together and tied them to Bundy’s paternal line. Officials stressed that this genetic link fits known travel, victim type, and attack method in his Utah spree.

Y-chromosome testing does not name a single person the way standard autosomal DNA often can. It narrows the field to a paternal line, which may include related males. Forensic literature explains that Y-chromosome profiles are powerful for exclusion and linkage, but they require context to point to one offender. In this case, authorities say the context is ample, and the profile sits inside Bundy’s known Utah pattern of abductions in late 1974.

What officials say closed the loop after five decades

The lab work drew from preserved 1970s evidence stored by Utah agencies. Analysts isolated testable genetic material, built profiles, and compared them to archived Bundy data kept from his Florida case. Prosecutors then weighed the science with witness histories, timelines, and the well-documented sequence of Bundy’s Utah attacks. That blend of hard lab results and case facts convinced Summit County to name Bundy and end the Smith investigation.

COLD CASE UPDATE: DNA connects serial killer Ted Bundy to the death of a Utah teenager in 1974. pic.twitter.com/8Z2kelGT3c

— ABC12WJRT (@ABC12WJRT) October 28, 2026

Cold-case teams now rely on preserved biological samples and upgraded kits to reach answers long out of reach. Federal research has urged agencies to focus on cases with viable evidence and a path to resolution. The Smith announcement sits squarely in that model. It shows how patient storage, careful chain-of-custody, and modern testing can give families and communities a clear, official record of what happened and who did it.

Why this matters for justice and for method

Families want truth, and communities want closure grounded in facts. Here, law enforcement made a case built on tested science and a known offender’s established history. That approach aligns with common sense: weigh the lab link, confirm it against the pattern, and speak when the evidence can carry the load. Officials did not claim a courtroom verdict; they used the tools they have to mark the record and honor a victim who deserves her name beside an answer.