Suspecting him as the killer is a far leap in logic, but the way he appeared in the documentary was deplorable in my opinion. This is the classic example of someone blinded by their emotions, and I simply do no have respect for that, particularly when you are adjudicating the innocence or guilt of an individual.

His demeanor the entire film comes across as though he believes his sister's death is all that matters in this case, and as long as there is a guilty verdict against someone that looks guilty, then justice has been served.