Suspect in European serial killer pursuit revealed

The evidence was amazing.  For over 15 years, DNA evidence from more than 40 crime scenes across Europe have detected markers from the same individual -- female, eastern-European, and bizarrely versatile -- adept at shooting, stabbing, petty theft, and of course disappearance without other trace.

Now it appears that the suspect is close to being identified, and she probably works for the company that manufactures the cotton evidence swabs the police forces all use.  Yup....trace contamination during manufacture is suspected.