If I were Morgan, I would be focusing like a laser on the question, "How did Casey know ZG went to Sawgrass"? Of course, there's a possibility that it was just a coincidence, but IMO this is the crux of his case. He needs to be interviewing the friends on ZG's Myspace who overlapped with friends of friends on Casey's Myspace. He needs to grill ZG's ex-boyfriend about why he suggested that she check out Sawgrass, when it wasn't on her list of apartments to look at. He needs to ask ZG about all the other apartments she visited, and get the guest cards from THOSE visits. Did she go to the apartments where Casey's friend worked (Crane Landing IIRC) and where Tony was looking for a place on June 19 or so?? This is a huge mystery, and if Morgan can figure it out, this is a good case with or without the "Fernandez." Otherwise, it looks like just a crazy coincidence.