All episodes

Three rowers take on a team of microbiologists.

A team keen on science fiction take on three fans of science fact.

It's Scotland versus Southport, with the teams clashing over fiendish questions.

A line-up formed from the members of rival quiz teams takes on three Douglas Adams fans.

Three Rocky Horror fans take on a team of New Zealanders.

Expect questions such as: what connects Gladiator Kim Betts, David Bowie, Pikachu and The Flash?

Two vegans and a carnivore take on three teachers who are hoping to kill off an annoying classroom meme.

There’s an EastEnders-style revelation as a family team face three former work colleagues.

The microbiologists are back, this time facing a returning family of stargazers.

Three fans of a paranoid android take on a team of Merseysiders.

Six people return to battle it out for a place in the next round – and three of them are going home.

It's another knock-out round: two teams return to take on the task of finding the connection between such clues as rain in Botswana, lion in Romania, weight in Mexico and royal in Brazil.

Neither team is eliminated this time, and there’s some quality quizzing on display.

What connects panorama, accountant, unalive and seggs?

There’s plenty of early buzzing going on in what proves to be a high-scoring contest.

Neither team is leaving the tournament this time, but the questions are as challenging as ever.

It’s a knockout round, and only one of the two returning teams can go through.