>> it just was simply a situation where the original examiner was in over his head and couldn't handle it. >> armed with the fingerprint evidence and the ballistic test results, robert cowan was arrested and charged with two counts of first-degree murder. >> took him back to the office and i showed him where his fingerprints were definitely found inside of that house and asked him to explain that, and he just shook his head and he just kept his mouth shut and stayed silent and said he couldn't explain it. >> gerald cowan was also arrested for the murders, but he