Maher al-Assad, the ousted president's brother and one of his closest aides, left behind palaces and a network of tunnels when he fled Syria. Where is he? And what does what he left behind say about him?

Maher al-Assad is the second most powerful and influential man in Syria, with a bloody history in the country, and the hidden man who was the shadow of the deposed president, Bashar al-Assad. He possessed great military power and money, and was very influential in his country.