For episode eighteen we go back to Pratchett's science fiction beginnings as - in the evening between the two days of the 2019 Speculate festival - author Will Kostakis joins us to talk about the 1976 standalone novel, The Dark Side of the Sun!

Dom Sabalos is about to become Chairman of the planet Widdershins when he is messily assassinated. Well...mostly. When he survives against all odds, he discovers his death had been predicted using probability math. The same science also predicts he will discover Joker's World, the mysterious home of the vanished ancient species thought to have laid the foundation for all intelligent life. Dom sets out to fulfil his destiny with his alien mentor Hrsh-Hgn, his new robot, Isaac, and a strange, lucky creature from his homeworld's swamp.

Filled with references and homages to prominent science fiction authors like Larry Niven, Isaac Asimov and Frank Herbert, The Dark Side of the Sun is the first of Pratchett's two early science fiction novels. It features the first appearance of many names and concepts he would later come to reuse in various forms in the Discworld. It's a short, fast-paced book with big ideas - not least Pratchett's own take on the classic sci-fi trope of a vanished, ancient precursor species known only through mysterious artefacts. But does it work? Is this an early sign of genius, or a run-up for someone who needed more time to come into his own? We'd love to hear from you! Use the hashtag #Pratchat18 on social media to join the conversation.

Don't forget that you can see Liz and Ben at Nullus Anxietas 7, the Australian Discworld Convention, on April 13 and 14! Watch out for our bonus live episode, recorded at the convention, in an upcoming special episode.

Next month it's back to the Discworld as we crank up the volume and rock out with Death! Yes, we'll be reading Soul Music, so get your questions in via social media by mid-April using the hashtag #Pratchat19.

Show Notes and Errata:

Will Kostakis is a writer and award-winning author. He's written many short stories and four novels, all for young adults, including The Sidekicks and The First Third. As mentioned in the episode, his first fantasy YA novel, Monuments, will be released in September 2019. You can find out more about Will and his work at willkostakis.com, or follow him on Twitter at @willkostakis. Since the 1990s many have claimed that if you play Pink Floyd's hit 1973 album The Dark Side of the Moon while watching MGM's The Wizard of Oz (1939), the songs supposedly sync up with the vision. Fans of "Dark Side of the Rainbow" (as it's known) suggest hitting play when the lion roars for the second or third time, and claim the experience is profound, but the band and producers say any synchronicity between them is just a coincidence.Terry Pratchett's first published novel was The Carpet People in 1971, five years before The Dark Side of the Sun. He was 23 at the time, but had started work on the book considerably earlier; the revised 1992 edition is described as being "co-written by Terry Pratchett, aged seventeen, and master storyteller, Terry Pratchett, aged forty-three"."Galaxy Song" was written and performed by Eric Idle for the 1983 film Monty Python's Meaning of Life. In a Python reunion live show which toured in 2015, Brian Cox appeared in a filmed insert nitpicking the song's accuracy. It's mostly close enough for rock and roll; in one of it's most accurate lines, it actually says the galaxy is "100,000 light years side-to-side", not 30,000. (Ben also made this mistake in an episode of re:Discovery.)Gilpin's Space is a 1986 novel by Russian-born American sci-fi author Reginald Bretnor. It paints a dystopian authoritarian future in which "eccentric genius" Saul Gilpin steals a submarine and uses it to successfully test his new hyperdrive engine. The novel follows a group of his friends who follow his instructions to steal another submarine and escape the oppressive regime at home ...