
The Bestseller Experiment
Join author and screenwriter Mark Stay with coach and entrepreneur Mark Desvaux, as they discover the secrets to writing a bestseller and challenge themselves and you to write, market and self-published a bestselling book in just one year. Each week, they are guided by and interview million-selling, chart-topping authors, publishers on the inside, editors, agents, social media specialists, and many more big names who play a part in the bestseller process. From the writing to marketing, plotting to publishing, learn the secrets to help you write your way to the top of the charts.
Latest episodes

Jan 29, 2024 • 35min
EP490: Shari Lapena - “The Debut That Sold Four Million”
SHARI LAPENA is the #1 internationally bestselling author of seven suspense novels including A Stranger in the House and The Couple Next Door, her debut which was a runaway global bestseller, with 4 million sales worldwide. It was WHSmith’s “Book of the Year” in 2016 and the #1 Adult Fiction Title in the UK for 2017. All of Shari’s novels have been New York Times, UK Sunday Times, and Globe and Mail bestsellers. In this episode, Mark Stay interviews Shari about her new page-turner “Everyone Here is Lying”.

Jan 22, 2024 • 1h 9min
EP489: Joe Hill ...On Never Giving Up, Beatles & Carving His Own Path from Dad, Stephen King
Joe Hill is the #1 New York Times bestselling author of The Fireman, Heart-Shaped Box, and Strange Weather. Joe, son of Stephen King, is a powerhouse storyteller from an incredible family of writers. Much of his work has been adapted for film and television. His second novel, Horns, was made into a cult horror-comedy starring Daniel Radcliffe; his third novel, NOS4A2, was adapted for television by AMC. The six books in the Locke & Key saga formed the basis for a hit TV series on Netflix

Jan 15, 2024 • 47min
EP488: Amy Newmark - “More Chicken Soup for the Soul (Part 2)”
Amy Newmark is Editor-in-Chief of Chicken Soup for the Soul, publishing over 20,000 stories in the last 15 years, launching the careers of many New York Times bestselling authors. Celebrating over half a billion book sales, the Chicken Soup anthology stands as a literary giant, rivalled only by Harry Potter.

Jan 8, 2024 • 53min
EP487: Amy Newmark - “Chicken Soup for the Soul (Part 1)”
Mark Desvaux delves into Part 1 of a fascinating conversation with Amy Newmark, the powerhouse Editor-in-Chief behind Chicken Soup for the Soul. Celebrating over half a billion book sales, the Chicken Soup anthology stands as a literary giant, rivalled only by Harry Potter. Amy unveils how it launched the careers of New York Times bestselling authors and shares how you can get your story published in this prestigious series.

Jan 1, 2024 • 48min
EP486: Mark Desvaux — “Your Best Writing Year Yet”
Welcome to a New Year's special of the Bestseller Experiment podcast, where we dive into your inner game as a writer. In this episode, Mark Desvaux shares his personal journey and challenges listeners to make bold dream declarations for their writing goals.

Dec 25, 2023 • 1h 28min
EP485: Christmas Special 2023
Mr Stay’s final episode as a co-presenter! The Two Marks celebrate Christmas by looking back at some of Mr Stay’s favourite moments of the podcast before he rides off into the sunset. But don’t worry! The podcast will continue and Mr D gives a few hints at what’s coming, but first we start with a few outtakes…

Dec 18, 2023 • 1h 32min
EP484: Mike Gayle — “Always be Entertaining."
Mike Gayle joins us to celebrate the 25th anniversary of his Sunday Times top ten bestseller debut novel My Legendary Girlfriend and the release of his 18th novel A Song of Me and You, a story of mid-life crisis inspired by a quote from Jim Carrey. Mike takes us from Birmingham to London and his career as a journalist, writing as an agony uncle for teenage girls' magazine Bliss before becoming Features Editor on Just Seventeen and he reveals the essential lesson he learned writing for the readers of those mags.

Dec 11, 2023 • 1h 14min
EP483: LM Chilton — “Be a Bit Cheeky."
L.M. Chilton worked as a journalist for The Times, The Mirror and Metro and TV shows like This Morning, The One Show and Loose Women. His debut novel Don’t Swipe Right was inspired by years of online dating (the dating part of the story, we hasten to add, not the serial killing bits…) and having worked in the media he took everything he had learned to get his book featured in the national press and on TV!

Dec 4, 2023 • 1h 5min
EP482: Tracy Wolff & Nina Croft — “The Little Things."
Tracy Wolff is the New York Times, and USA Today bestselling author of over sixty novels from Austin Texas, Nina Croft is an incredibly prolific author from the UK now living in Spain and they have collaborated on Star Bringer, a new adult romance novel billed as Firefly meets the Breakfast Club. Tracy and Nina take us through the process of co-writing a novel and offer great tips for anyone thinking of trying it for the first time. Also, the two Marks have a big announcement at the end of the show...

Nov 27, 2023 • 1h 25min
EP481: Jake Lamar — “Make it Sing."
Jake Lamar developed his latest work Viper’s Dream as both a radio play and a novel. Jake tells us what he learned working for Time magazine, gives us a crucial tip for writing about real figures from recent history, and how he learned to make his writing sing...