hey that's great.I got some theories about the CODs and I wouldn't mind a pro opinnion on them:
1.I think this is the (opera) singer body.I bet that this is the "carotide laceration" Doc Al was talking about.Propably another singer if you ask me,cause for some reason people always mistake the part of the neck where the carotide is as where voice starts from.There are defence wounds on her hand and arm
2.She's a therapist."So much for a therapy or so",the cheesy line from Langston.She looks to have been dead before being put into the tub.No blunt force trama visible.Staged death from a client ?
3.Alright,there was a screenshot about this but I will look for it later.The murderer was near a source of light,like stadium lamps,the vic didn't see his killer.Or from the looks of his neck injury perhaps the murderer was behind him and the light stunned the vic so that he couldn't see him coming
4.Staged accident

.Why is his arm like that ? Pulse taking ? Paramedic intervenation ?
Propably the killer looking if he was succesful
5.Yeah she's the girl in the blanket.Is that the lighting or is it her skin colour pink ? Possible CO murder ? She seems to be in her bathroom