and they didn't listen to the family, those two things are not evidence of a cover-up. >> it wasn't that they didn't close the case. they didn't do anything to create a case. >> reporter: he says that in 1986, the detectives were protecting stephanie lazarus. >> they actively covered up the identity of the person who committed this crime. >> reporter: the rasmussen's lawsuit alleging a cover-up was dismissed in 2011. charlie beck was then the lapd chief and he spoke with us about the case. >> i can accept somebody that is unable to solve a crime that is solvable. i cannot accept somebody that covers up a crime or covers up an individual involved in a crime and i have no -- absolutely no indication that is what happened here. >> reporter: there is intoing to suggest they deliberately looked away and stephanie or not a road they didn't want to go down? >> i think a lack of -- not an act to exclude stephanie.