forensically that that lamp had to have been broken by firefighters as they entered the room and after they suppressed the fire, not during the murders. >> that meant debbie reinboldt's testimony about the lamp had been false. even more troubling were facts callahan learned about the purported murder weapon. >> the knife that deborah reinboldt presented was a folding knife, where the knife bends over. that knife had a blade of 5 and some inches long. >> one of the things the pathologist did was measure the depth of the wounds. on both bodies, the wounds were more than 6 inches deep. we then took it to michael baden, a forensic pathologist and he provided us with an affidavit and analysis. >> what board certifications do you have? >> three areas of pathology. anatomical pathology,