technician. and she got the drugs while she was under investigation for possible drug crimes. we are looking into the story and dan explains how this happened. reporter: it is the scandal that rocked the san francisco police department. deb admitted to skimming cocaine from evidence she tested at the crime lab and using it herself. if some fell on the counter or something and was there afterwards i may have taken that. the attorney general office declined to prosecute her for lack of evidence. but with her work and court testimony in question, 700 current drug cases have been dismissed and thousands of convictions are getting a second look. the sf pd reputation is about to take another hit because of these 3 little packets. actually a little money envelope. no money in it but the substance in there and you can see it is a small item but that s contained p c p and tested. reporter: madden attorney says now that she s clear of charges in the crime lab case he can reveal