A look at some of history's greatest artists, from the first images painted onto the walls of caves through to Chris Ofili's work with elephant poo. We discover the most stolen painting in history, how Picasso and Dali found innovative ways of paying for things without using money, the horror of painting people smiling, and see the Teenage Mutant Ninja Renaissance Artists help a lady in distress.

In this week's episode mankind's most Ingenious Inventors are given the Horrible Histories treatment, as we take in everything from the invention of the wheel to the crisp, featuring the Gutenberg press, the man who invented both the dictionary (very successfully) and manned flight (less successfully), and the Greeks vs the Chinese battling as to which of them are History's best inventors.