There is no "can't find the cause of death" at play here at all. They haven't determined the cause of death. Have Not is a completely
different concept from Can Not. That was, in fact, the entire point of my post. Nothing is decided yet; we cannot say "cannot" in ANY REGARD,
except for maybe "the police CANNOT immediately see any sign of that the victim was brutally stabbed".
Murdoch and his son are already out of the country and far away from justice now. The only people who would be brought to justice is a few police
officers, thats all.