DS Davidson was a SOCO, who's duties included taking photographs, fingerprinting, and being an exhibits officer. Lets also not forget that on the morning of the shootings he was at home off duty, when at 7.45am, he was contacted at his home by the control room, who rwquested him to come into the office because police were dealing with an incident at whf involving two bodies, one a murder, the other, a suicide...
Now, by 7.45am, the firearms officers had not yet gained access to that upstairs side of the farmhouse where bodies awaited discovery. But according to the contents of the police radio logs, 2 bodies had been found upon entry, "the body of one dead male", and "the body of one dead remale"(7.37am), "One dead male, one dead female"(7.38am), and "can someone contact the poluce surgeon, and coroners officer, regarding 2 bodies" (7.42am)...
How did the control room know by 7.45am, that police at whf were dealing with 2 bodies, that one was the body of a dead male, and the other was the body of a dead female, and that one of these bodies was being described as a murder, whilst the other body was being spoken about in terms of that death being a suicide?