Yes, Top Hat man could be Fel, which would mean we've probably met him at least twice now, after he glamoured himself and gave us the letter.
I was expecting more out of the morgue too. I hadn't realized how unofficial our investiagation was and expected to get the run down of the autopsy from the coroner.
Without knowing the state of the previous murders, we don't know if organ removal is a pattern; or if the organs are for the meat market, but the eyes are part of a ritual etc.