someone wanted her dead and launched a full proof plan but could the fbi stop it in time? here's the blue mystery. >> from the moment the ambulance arrived in the san diego emergency room in march 2016, the situation was frightening and desperate. triage nurse took one look at the woman on the gurney and new something was terribly, terribly wrong. >> she was losing her vision and couldn't feel her feet and hands. she couldn't even see the water that i was giving her. >> the patient's name was brigita uto she had just turned 28 yet she seemed to be near death. >> at that point, i mean, she was very, very sick. >> oh, she was probably the sickest patient in the er at the time. i told my co-worker that's she might code on me. >> whatever was killing her wasn't evident.