ana gonzalez-angulo ?very eager. >> she told the lieutenant that they worked in their offices and attended a business dinner that evening. she witnessed his condition slowly worsen and even drove him to the hospital around midnight. every minute you can account for, i would imagine helps you put together that crucial timeline. what did she tell you? >> i asked her for an account of the week prior to him going into the hospital. >> ana told him all about george's week, the details of his busy schedule. she was sharing lot but as lieutenant sosa listened he had a hunch that she might be listening something out. so he went back and pressed their colleagues for more information. >> sosa starts to find out that there may have been something more than just a working relationship. >> the plot started to thicken. >> people started to realize and put pieces together. >> even though the folks at md anderson were not so keen on speaking to investigators, it did not stop them from speaking amongst themselves. >> did a