some have said this means he's nervous because he knows he's about to escape. do you see anything in this clip? >> not really. he's walking back and forth, but he's going to do something prior to the exit. >> now, here is the moment where he walked behind that hidden wall. it's not a full wall. then he vanishes like a magician. so there's a moment where he comes back out. that's where that tunnel was built. so what does that tell you, as an investigator? >> he had a plan. he knew what he had to do. it was prearranged, prefabricated and he made the move when he had the opportunity. >> johan, you have been studying this. you have been in mexico and you are a journalist there. how was it that mexico thought they would be able to hold el chapo? >> well i mean you would