>> once i got to this area and realized this isn't the way it looked back then and that the road was approximately ten feet lower with large boulders in the area, i felt that this was it. after hiking around the area for approximately a month, i started hiking this canyon down below us here, and within about 15 minutes, i saw a white speck the size of a dime or a quarter in about six inches of water. i reached down into the water and pulled it up, and as i was pulling it up, i discovered it was actually a bone that was covered with mud and silt, and as i examined it, i realized it appeared to be a human hipbone. it was definitely a gratifying experience locating her and giving closure to her family, but without the efforts of everybody involved, it never would have happened. coming up -- park dietz gives his opinion of what drove the i-5 strangler to kill.