Unlike most cold cases involving unidentified victims, Snohomish County sheriff's detectives actually know who killed the young woman whose remains were found about 30 years ago in blackberry brush south of Everett.
The evidence pointed to David M. Roth, then 20, who was convicted of first-degree murder in 1979 and sentenced to prison. Despite Roth's confession to a detective, he swore he never knew the name of the hitchhiker he picked up, then strangled and shot several times after she refused to have sex with him one day in August 1977.
The girl's identity still eludes sheriff's investigators, who Thursday released a new composite sketch of "Jane Doe." They hope someone will recognize their murder victim -- maybe a family member who reported her missing. And they hope to bring both cases some closure.
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