Italy’s Supreme Court chose double jeopardy and reversed the acquittal of American college student Amanda Knox in the former of her former roommate, Meredith Kercher.  Knox is vowing to fight the charges.

Knox spent four years in an Italian prison before an appellate court cited shoddy police work and bad forensic evidence, overturning her murder conviction in the 2007 death of Kercher.

Knox returned to Seattle after her acquittal and was not in Italy for the decision.

Also facing retrial is Knox’s former boyfriend, Raffaele Sollecito, who was acquitted with her. 

Knox released a statement reading, "The prosecution responsible for the many discrepancies in their work must be made to answer for them, for Raffaele's sake, my sake, and most especially for the sake of Meredith's family. Our hearts go out to them."

The Italian criminal justice system does not forbid "double jeopardy", and a defendant can be tried twice for the same offense.