was infatuated, even obsessed, with maribel ramos. for instance, the time maribel told k.c.responded by getting plastic surgery. and $12,000 later he's got a different face? >> correct. >> reporter: and he says the reason he got it is because of the woman who's missing? >> correct. >> reporter: now here was k.c. at the public library, google mapping a remote wilderness area. since the dawn of detective novels, killers have returned to the scene of the crime. but these days there's no need for the bad guy to even get in his car. now, it can be done with the click of a mouse. the good guys still have to do it the old fashioned way. detective shawn haydon got the call on the radio. drive out to rustic modjeska canyon, southeast of the city of orange . >> we didn't know what to think. this is a very rural area. no one would be out here mountain biking or hiking. this is way off the beaten path. >> reporter: at the other end of the two way radio, detective bryan stanley was re-watching k.c.'s google search trying to give detective haydon better directions. k.c. focused on an inte

so maribel ramos became private first class ramos. she joined the army hoping to use the g.i. bill.er first day was august 8th, 2001. and just 34 days later, the whole world changed. we all sort of recoiled in horror. but you probably also thought, "that's going to affect my sister." >> yes. i turn on the tv, and the towers are crumbling. first thing i thought was, "oh, my gosh, my sister's going to war." how do you wrap your mind around that? >> reporter: lucy worried. their mother worried. but maribel was like a rock. what did maribel say about going overseas? >> she didn't express her feelings about it. she just said, "well, this is what's happening, sister. you need to talk to mom." >> reporter: maribel went to war in iraq. what was it like to see her in uniform? >> it was pretty amazing. >> reporter: giselle cendejas is lucy's daughter, maribel's niece. >> i saw her as, like, a really brave, strong soldier. sometimes i wouldn't even see her as my aunt. it was just, like, whoa, you're going out there, like, to save everybody. >> reporter: you were proud of her? >> yeah. >> repor