CNN Forensic Files May 24, 2015 07:25:00
Involved in the fight. >> and we were not leaving easton, maryland, until we got his dna. >> this proved to be harder than investigators anticipated. denny smoked during his interrogation but always made sure to keep the cigarette butts. detectives offered him a bottle of water, but he wouldn't touch it. finally, they asked him to sign a document, saying he refused to provide his dna. >> we asked him to put the letter into envelope and seal the envelopes. he refused to seal the envelopes, and basically told us, look, you tried three times to get my saliva on something. first, the cigarette but...