nbc bay area's investigative unit reviewed records for rape and sexual battery cases from the san mateo sheriff's office dating back to 2018. through public records request, we obtained information on 60 cases and cross referenced their original charges with the final outcome. we found 32% of the cases were either rejected by the da's office or later dismissed; 11% are ongoing; and about half, only 57%, were resolved. of the 31 cases where the da charged the defendant with a sex crime, 19 resulted in a sex crime conviction; four were convicted of a sex crime by jury; but in eight cases, 26% of the time, the defendant negotiated a non-sex related plea deal. shin-mee: sometimes the facts or the witness statements change after we file the case, and if our case is weaker than we originally assessed it to be, then we are going to enter into negotiations with defense. hilda: but a law enforcement source with direct knowledge of