Victoria Coren Mitchell hosts the quiz where knowledge only gets you so far – the vital extra ingredients are logic and lateral thinking.

Another week with no knock-out – the winners progress, while the losers will have to play again to stay in the competition.

One team correctly guesses the fourth in the sequence after just two clues: master and ultra.

Victoria Coren Mitchell hosts the quiz where knowledge only gets you so far – the vital extra ingredients are logic and lateral thinking.

It's a very close game, with the teams having been here before and knowing what to expect: questions such as what connects Armies of Sauron, Lord Zedd, Yogi Bear and Boo-Boo, and Celtic?