Better late than never, eh?  It's always worth remembering than the "ABI" doesn't like to call homicide unless they already have an accused in mind.  Which is to say that they don't usually investigate the crime/death at all - they just look for a means to make a case against a specific 'someone'.  Making an {easy} case against an accused [and getting a conviction to stick] is a whole lot 'easier' if one doesn't have too much hard evidence of the crime that actually happened.