Who was Didius Julianus?

Enraged at the lack of a decent bonus, the Praetorian Guard cut down the newly installed Emperor Pertinax and resolve to sell the throne to the highest bidder. Stepping forward with a sufficient bank balance is Didius Julianus, a man with a proven track record in both the military and the senate. What could go wrong? Year of the five emperors, take two.

Guest: Dr Caillan Davenport (Roman History, Macquarie University).