homicide detectives often tell us they work for the dead. up here on landfill mountain, we understood that a little better. as detective julissa trapp gripped her rosary, the one for sable, we walked away and gave her time. and our microphone picked up something. >> hail, mary, full of grace. blessed. >> reporter: mountains of trash, things we use and cast away. but for detective julissa trapp, this will always be hallowed ground. >> it's hard to look at that and know that's where you ended up, and i know you guys are all in a better place. and i know that you're together and you're helping each other. you can rest now. and i can take it from here.