Guandique repeatedly denied involvement in her murder, and prosecutors acknowledged a lack of DNA evidence linking Guandique to the crime and a lack of witnesses.

CNN: New hearings in Chandra Levy case add to mystery

On the other hand they also find themselves at pains to explain that one of television's fictional devices an unequivocal match between a trace of a substance found at a crime scene and an exemplar stored in a database, whether it be fingerprints, DNA or some other kind of evidence is indeed generally just fiction.

ECONOMIST: Forensic science

If the justices rule for King, more than 1 million DNA profiles that have been stored in a federal database for matching with future crime scene evidence may have to be purged and others will never be collected, leading some repeat offenders to go free, advocates say.

NPR: Court Takes Up Question Of Arrestee DNA Sampling

The police have assembled a case against the accused men based on 80 witnesses, information gleaned from confessions of some of the accused, and DNA evidence linking all of the alleged perpetrators to the crime, according to a police document reviewed by The Wall Street Journal.

WSJ: Trial Court Proceedings to Begin in Delhi Rape Case

In America we must make doubly sure no person is held to account for a crime he or she did not commit -- so we are dramatically expanding the use of DNA evidence to prevent wrongful conviction.

CNN: Transcript of State of the Union