There are a lot of possible reasons why the FBI and police mishandled the Hser Ner Moo murder case.
When you look at similar murders in the same area which were mishandled in a similar way, a person has to wonder if there might be something more sinister going on.
This page will look at the possibility suggested by one of Esar Met's defense attorneys that the killer was not Esar Met nor was it 'roommate #1'.
The most violent and dangerous criminals who are not caught are often in uniforms.
Working in a uniform is very appealing to the most dangerous criminals, and when a group of them works together, based on some bond from something like military service, they are almost uncatchable.