William Barnes devours history books. The high school English teacher from Hawke's Bay won last night's Mastermind final, thanks to a broad general knowledge, and his incredible recall of facts about American History in the 1960s.
Both are pretty extensive subjects, but he consistently scored highly in those sections.
So why the interest in 1960s America, and how did he manage to become such an expert in this area?
He joins Jesse in the studio to talk about why he picked these topics and what it felt like to win the title last night.