it's a scientific match. this time, the defense fights back. both dr. sperber and dr. campbell testify. >> i felt the evidence i presented was so overwhelmingly negative for the prosecution's side that i thought it had gone very well. >> reporter: the dna and a physical evidence excluding krone is also presented by krone's lawyers. the shoe prints, fingerprints and blood samples found at the scene. >> i was feeling good. the truth was coming out. the facts were told. the evidence was pointing to someone else. it wasn't matching me. >> reporter: after seven weeks, the case goes to the jury. they deliberate for three days. >> i said, i have a bad feeling. they have been out too long. >> reporter: april 12. the jury has reached a verdict are. their decision is a huge blow. ray krone is guilty, again.