Despite the damaged cricket bat and the bloodied body, despite the testosterone and needles allegedly found in his bedroom, despite the hour of screaming heard from the house shortly before the incident, despite the revelations that there was a history of outbursts of rage, it is just possible that Oscar Pistorius thought the person he shot through his bathroom door and killed was an intruder - a young female intruder with a voice just like that of his girlfriend, Reeva Steenkamp.
Plenty of people knew about Pistorius' dark side, we now learn.
And after years of denials, Lance Armstrong was revealed as a liar, drug abuser and cheat. Who knew? Everyone around him, apparently. What it had taken years for the US Anti-Doping Agency to pin down they had known about all along.
Breathing down the neck of those examples came the news that performance-enhancing drug use is widespread in Australian sport.
Could it be happening here? Of course it could. No links between Australia and New Zealand are stronger than those revolving around sport, that wonderful glue between nations. For a practice to be endemic in one and absent from the other defies all probability. Closer anabolic relations are almost certainly in place in some quarters.