Da Vinci's Demons (The Box, Sky, Thursdays, 8.35pm) is either a jolly good romp or a load of old rubbish, or deep and meaningful or possibly all of these things. I can't quite decide, except on the deep and meaningful because that it isn't.
It can certainly come over all mystical - there is a daft plot involving a quest for a hidden manifesto, The Book of Leaves, which may or may not contain everything that will ever be invented and which was once invented but the knowledge of which has been forgotten and suppressed by that nasty lot at the Vatican. Something like that.
It doesn't really matter. All of this is just a vehicle for the youngish Leonardo to get himself in a heap of trouble with very powerful people. Well, he will sleep with the mistress of the head of the Medici family, which is not just asking for trouble: It's the equivalent of sticking a bull's eye in the middle of his forehead and asking for an arrow between the eyes.
The mistress, the beautiful and bonkable Lucrezia, is not all she seems. Why would she sleep with some piddlingly small fish of an artist?
So that we can have bonking scenes, of course. Also, she is a spy. I think. It's all very confusing, and not just because of the switches in tone.