We've made considerable advancements in the last several decades of forensic science. DNA testing has given us the ability to pinpoint culprits that may have never been caught just a few decades ago.
This opens up the possibility for cold cases like the recent trial of the 1979 Catherine Janet Walsh homicide to finally go to court, and for justice to hopefully be obtained for the victims.
But new evidence doesn’t always mean justice will be cut and dry.
Essential Pittsburgh legal contributor and University of Pittsburgh law professor David Harris, says the most difficult challenge when opening a cold case is tracking down witnesses.