The series 2 finale finds Helen and Bill revealing more fascinating facts and tantalising trivia from their lovely listeners. They learn more about Sgt Pepper's Lonely Hearts Club Band, Weird Al Yankovic, product placement in the Carry On films, Spandau Ballet, and John Logie Baird's socks.

S2 E20. Series 2 Finale

Helen and Bill go freewheelin' down the great internet rabbit hole of trivia to discover fascinating facts about the Glastonbury Festival, Elton John, Gremlins, John Williams and Dirty Dancing.

S2 E19. Glastonbury

Helen and Bill unearth another treasure trove of weird and wonderful facts about all sorts of things, from Toy Story and Tim Allen to Vancouver Island and ice hockey via the rather unpleasant business of sweating.

S2 E18. Toy Story

Helen and Bill have been binge watching Alfred Hitchcock films and have discovered some curious facts about him. They also unearth some fascinating trivia about the rapper/actor Ice Cube; people who have declined knighthoods; the kid's show Jackanory; the origins of the Chinny-Reckon gesture and bum chins.

S2 E17. Alfred Hitchcock

Confusion over bulbs starts this week's episode before Helen and Bill find a feast of facts about tulips, Amsterdam, Van Halen, the film Taken, and people who have kidnapped themselves..

S2 E16. Bulbs

The Bee Gees kick off this week's episode, and the great internet rabbit hole soon leads Helen and Bill to fascinating facts about Gene Kelly, Harold Wilson, Custer's Last Stand and the artist Pierre Brassau who happened to be a chimpanzee.

S2 E15. The Bee Gees

The origin of the idiom, "Crossing The Rubicon" kick starts this week's episode before the great internet rabbit hole leads Helen and Bill to all manner of fantastic facts about Spandau Ballet, beer, Motörhead, phobias and wasps.

S2 E14. Crossing The Rubicon

Seven Tears by The Goombay Dance Band starts this week's episode off, which leads Helen and Bill to discover a treasure trove of frivolous facts about key changes in pop songs, Patron Saints of the weird and wonderful, and all sorts of other terrific trivia about Screaming Lord Sutch, coffee, and the world's oldest cat.

S2 E13. Seven Tears

When One Thing Leads To Another is listened to all over the world including Bhutan, and so Bhutan becomes this week's starting point. It's not long before Helen and Bill disappear down the great internet rabbit hole to discover curious facts about anything and everything including the highest unclimbed mountain in the world, the invention of the television, the film Absolute Beginners and 1985's Live Aid.

S2 E12. Bhutan and Beyond

When One Thing Leads To Another is a weekly podcast that takes you down the great internet rabbit hole of interesting trivia to discover a treasure trove of fascinating facts.

When One Thing Leads To Another

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