TW: real life blood drama!
It's such a silly premise that blood = crime. I fainted in my bathroom a few days ago and on the way down and upon landing managed to bounce off the side of the bath, spin round and crash land & face plant. There was blood everywhere. But it was a completely normal amount of blood loss.
I reckon Arcraigy's analysis of the scene would have me being chased down by a crazed killer room-to-room and suffering 'fatal blows'.