CNN Forensic Files February 14, 2014 07:55:00
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 timeses to get my saliva on something. first the cigarette butt, then the water bottles and now the envelopes. seal it yourselves. is there anyt...