in, they said they heard screams coming from the park. she was found naked and bound with red duck taped. when you see the photos, you can feel the terror. he left her for dead. we were shocked. as a dna laboratory that there were no other offenders. how is this guy not in the system? then, one day, you ve got a call. they said there s been an update on the case. it was like finally. i ve been thinking about who this guy was for so long, i don t think anything could have prepared me for that answer. how do you wrap around mind around the fight that someone you trusted this. i can picture him smirking. a second customization? yes. might screw up. what kind of person does that kind of thing? exceptionally sick, evil. reporter: the evening arrows warm and thick with anticipation. college students, returning a new, mix and drank with young locals. darkness fell on colorado. one more night to take a lusty bite of the flooding summer. that last friday
happened? i would have an anxiety attack. just like the overwhelming sense of doom. reporter: kirsty agular saw her once happy friend turned into someone she barely recognized. she became isolated and she was very self conscious about everything and everybody that she was around. she was completely broken and shattered from what had happened to her. reporter: and then, in 2015, a whole group, in a way, came to amber s rescue. how spacewalk invited her to live here with them in this safe space among friends, in a good neighborhood. good situation? it was fine. reporter: they feel safe? it did feel safe. reporter: it s a new family dynamic, isn t it, a bunch of friends, living together? like the tv show, frankly.
but the name on the room she was sent to wasn t amber smith. because they didn t know who did it to her, so for her safety, they put her under an alias name. reporter: and in that room it was very shocking, scary to see. i walked in there and her face was unrecognizable. that was my sister, my best friend. reporter: they had met when amber was dating kirsty s brother. she ended up getting pregnant with gabriel and a relationship grew from their. reporter: kirsty had been helping raise amber son, was babysitting the night of the attack. amber had been working hard to get her life on truck, earn her deep ged, juggle a job at the 7-eleven and trying to be a good single mom. and, she was young, pretty had lots of friends. we had no idea who could have done anything so horrible to her. amber was somebody that you