but when she checked locations for kianna and josephine sure enough there he was.checked the record and discovered that at that particular moment gordon wasn't on a gps monitor, but he was wearing one at the other three places and so was cano. the electronics made it absolutely obvious here they were cano and gordon driving together up and down beach boulevard and all around santa ana and anaheim. >> i mean, even when they're on the freeway -- >> reporter: they were in the same car? >> they were in the same vehicle. >> reporter: julissa trapp had prayed for a hail mary, but she never expected anything like this. >> i soon realized, "i'm not just dealing with one, we're dealing with two." two sex offenders wearing gps bracelets. >> reporter: but for all the electronic cross referencing, the case against cano and gordon was purely circumstantial. detective trapp could not arrest them. not without more evidence. and that was terrifying. i mean, there were young women who were at real risk here. >> yes. >> reporter: and if you waited too long -- >> yes. >> reporter: ho

. >> reporter: somewhere under here, in addition to kianna, josephine, and martha, there was victim number five. and so detective trapp worked her sources until she had a name. it would be reasonable to say, "okay, that's her." >> absolutely. logically, yes, absolutely. >> reporter: and yet, when we spoke with her back in january, she couldn't quite bring herself to tell yet another mother her suspicions. >> i -- not only have to go tell her she's dead, i have to tell her that she's one of these girls. so that's -- that's gonna be hard, i think. >> reporter: out here with us, she seemed to be willing herself, pulling strength from the jane doe herself. >> i think in her own way, she'll help me. she'll help me. i don't think she wants to be jane doe forever. >> reporter: and then, just a few weeks ago, she let us know. she'd called on the fifth mother and delivered the news. that sable pickett, just 19 years old, crossed paths with gordon and cano on the streets of orange county, and did not survive. no charges are pending for her murder, but another family can finally stop wondering. homic