A young woman, Angie Dodge, was violently raped and murdered in her apartment in Idaho Falls in 1996. Circumstances led the investigators to a suspect who was detained and interrogated. A confession was made and he was convicted. Although he was convicted, little DNA evidence was available. A semen stain was found at the scene, but it did not match the man who was convicted. No other suspects in the case matched the DNA.
Fast forward 20 years, evidence that was not viable to collect from with traditional collection methods was sampled with the M-Vac. The evidence included other personal items. The collection was completed and the samples were tested. None of the major Y-STR profiles matched the convicted man. What was discovered was the fact that the semen stain profile and the DNA found on the newly sampled personal items were consistent. The convicted man, Chris Tapp, was release from prison after a resentencing hearing on March 22, 2017 and exonerated on July 17, 2019. The alleged perpetrator has been found, arrested and is awaiting trial.
The M-Vac made it possible to determine what DNA material was on the personal items and significantly strengthen the DNA evidence.
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