All four series of the BBC Radio 4 comedy panel show about morality and ethics, hosted by Sue Perkins – plus a special episode recorded at the Edinburgh Festival Fringe

Described by the Radio Times as ‘a cross between QI and The Moral Maze’, this hilarious and thought-provoking panel show sees comedian Sue Perkins putting her guests through the moral and ethical wringer as she poses a series of tricky hypothetical questions – and cross-examines them on their answers.

Would you provide an alibi for someone you hate? Would you let an annoying colleague take credit for your work if it meant they would get a job elsewhere? Is cheating on your partner ever acceptable? These are just some of the devilish dilemmas facing the panellists – and as if that’s not tricky enough, there’s also a variety of rounds including Audience Dilemmas, where they ‘solve’ any problems the audience may have, and Quickfire, where shades of grey are dismissed in favour of a fingers-on-buzzers binary choice, such as ‘Would you rather eat a kitten or fight a swan?’

Among the panellists tiptoeing through the moral minefield in these four series are comedians Dave Gorman, Shappi Khorsandi, John Finnemoreand Graeme Garden; radio DJs Annie Nightingale, Shaun Keaveney, Cerys Matthews and Gemma Cairney; poets Lemn Sissay and Ian McMillan and sports stars Isa Guha and Clarke Carlisle, as well as historian Dan Snow and former Blue Peter presenter Janet Ellis.

Plus, a special Edinburgh Festival Fringe edition features guests including Marcus Brigstocke and Bridget Christie, and subjects including disabled parking spaces, adverts, and life imprisonment.