Ray recently interviewed Lindsay Powell about Caligula. I asked Ray for show notes. This is what he gave me.

"We talked of keeping the sources in context, considering the times they lived it and agenda. He went deep. Then his analysis of the events in the German border and the coast of Britain. And his apparent fickleness, which in a ruler, effects everyone but also how people like Suetonius probably used that."

See? That's what I have to work with.