at this place. and then, of course, i'm being watched by a security camera at the same time. in fact, you can't go anywhere in this building without being seen by security cameras. the security team at the nursing school did the same thing. they just look for the computer record of the key card being used. and they pulled of the security video from that moment in the place. and viola, there was their thief. >> so, i have them sent me the still photographs. i want i looked at it, i immediately identified it it was gisele esteban. the picture was dated, may 20, 61 day before michele disappeared. so, what else did she do that they? >> richie got a subpoena for all the hospital security cameras. when he saw on the video was those changing disturbing and moved georgia esteban at the top of the list of persons of interest. >> coming up --