Episode 28 Mastermind : Season 38 Episode 28
BBC Two 30m
Aired: April 13th, 2012 @ 7:30 PM EST on BBC Two
John Humphrys puts the questions to five more contenders in another semi-final. A place in the grand final awaits the winner. Subjects include the US Masters, Philip Pullman's His Dark Materials trilogy, the River Clyde steamers, classical mythology and the East African campaign of World War I.
