>> we know from john that he was engaged that he was intimate with stephanie lazarus. e was a love triangle and lazarus had deep feelings for john ruetten and may have had a motive to harm sherri rasmussen. >> was her killer a scorned lover or a co-worker? >> we had two women. >> deborah the nurse and stephanie lazarus? >> correct. >> the cops scoop and up a sample of the trash which contained dna and it was sent to the l.a. crime lab for analysis. >> she was not the donor from the bite. >> that left just one possible suspect. number five on the list. john ruetten's ex-girlfriend, stephanie last ruz. >> we came home to a phone message from the detective that they wanted to talk to us and i thought, oh, yeah right. i thought it was just another false hope. >> this is detective nutall. >> right. >> he said that they were opening the investigation. >> he was like, where have you been for the last two decades. >> and rasmussen explained how he told the detectives back in 1986 that someone was stalking his daughter sherri. a woman with crazy eyes. the ex-girlfriend of sherri