Techniques Used in Arson Investigations

In the days of arson and forensics, there was no way to prove really then whether or not this was arson or an accidental fire. No electricity, of course, at the time. Arson investigators are very well trained. There is bona fide science behind it, but it is something that requires an expert to interpret. And sometimes they can't determine, you know, origins of fire or detect incendiary devices or accelerants. But luckily, the prosecutors case didn't hinge so much on that.