. >> he's like harry houdini. every single time is a close, he would escape. >> it was beyond a gym agitation. >> to catch the bad guy, you have to become the bad guy. >> you are inside this real life thriller. >> this is. it >> he's there. >> he's there. >> he was like living a movie. allowing. >> hello and welcome to dateline. he was the infamous claim pin who inspired fear among criminals and law enforcement on both sides of the border. his name was el chapo. for over a decade, they are third -- builders muddy safehouses. the one man was determined to capture the fugitive and would lead his team to great lengths, even risk his own life to get the job done. here is a lester holt with inside the hunt for el chapo. >> he was hiding so. somewhere in these four pitting mountains. or in this sprawling city. or in this sun splashed beach resort. somewhere, somewhere in mexico. he was the most wanted drug lord in the world, implicated in hundreds of murders and finding him became dangerous mission of this man and a tea