so it's, obviously, a battle. >> reporter: uphill battle does not begin to describe it. the cold case the detective opened on that bleary-eyed monday morning would lead him on a w chase of a lifetime and sha the foundations of the lapd. dates back to 1986 and a battle for the truth by the parents of ah young bride. >> we miss her every day. >> reporter: those parents are nells and loretta rasmussen. >> doesn't make any difference what day it is. it's pain that is always there. there's no cure for. >> reporter: who. would want to kill sherri rasmussen? she was hard working, caring, and popular with her coworkers, trained as a nurse, sherri was director of critical care at a large local hospital. we are implementing the people difference program. >> it was a devastating day. she was 29 years old and just in