the once daunted task force became one investigator, tom jenson, assigned to monitor any tips that came in. dave reichert, the original investigator, was reassigned. >> i was given orders to, you are now a patrol sergeant. stay away from green river. it's not your job any longer. >> it's like the scene out of a movie where they tell the guy stop working this case. >> right. >> but this movie had other scenes. flashbacks. the investigators had already encountered the man they would one day arrest. but it would take a combination of modern science and old fashioned police work and the dedication of one man, dave reichert, to nail him. like the sea-tac strip itself, it would be a long road with many dark turns. >> and for this woman, it would mean coming face to face with the green river killer. amazingly, she would live to tell the tale. >> he was on top of me trying to choke me. >> when "chasing the devil" continues. a lot of times, things are right underneath our feet, and all we need to do is change the way we're thinking about them. a couple decades ago, we didn't even realize just ho

. >> a team of detectives and psychologists, led my tom jenson, who had stayed on the case all those years, began their intense interrogation of gary ridgway in june of 2003. fittingly, on friday the 13th. even though under the terms of his plea agreement he was obligated to tell the truth, getting the truth from a killer who had lied for 20 years wasn't easy. >> he's not only a psychopath, but he's a pathological liar. so in the months of investigation and interrogation, we had to weed out the lies and find the truth. >> i admit it, i had a lie in my head and it kept on coming out kept on coming out. >> during the questioning, ridgway alternated between rage and contrition, between pride and what he called his career of killing and stonewalling, pretending he didn't remember the details of his crime, but he wasn't a very big guy, only 151 pounds. and he admitted that in the beginning he had to figure out the best way to kill. >> the first one was the hardest one, just i fought all over with them like this, and, then i'd wrap my legged around them and twist. >> these are all things y