125 passengers. One killer. No escape.

Flight 868 is a ticket to paradise, a non-stop service to San Juan, Puerto Rico. The plane is packed with people looking forward to the trip of a lifetime. But under the cover of turbulence, a killer strikes – and when the lights come back on, a passenger is found brutally murdered. As holiday dreams turn into nightmares, a bewildered air marshal must solve the crime. For this is no ordinary flight and there’s only one certainty: the killer is on the plane – and the only way out is down . . .

Bought from US publisher Blackstone, Firefinch describes this as ‘a super-compelling holiday read’. It publishes in July 2026.

Kate Parkin said: ‘We could not resist this high-octane, high-altitude thriller. Perfect for readers of Ruth Ware’s The Woman in Cabin 10, Lucy Foley’s The Hunting Party and Agatha Christie’s Murder on the Orient Express, Murder at 30,000 Feet pushes the genre to new heights. Pack it in your hand luggage and fasten your seatbelt – you’re in for a rocky ride!’

Susan Walter said: ‘My father was a pilot. I grew up hearing stories of sketchy take-offs and harrowing landings. I have been fascinated by these death-defying flying machines ever since. It was only a matter of time before I combined my fascination with aeroplanes with my budding obsession with murder. I’m beyond thrilled to have Firefinch as my UK co-pilot. I love their author-first vibe and their one-two punch of big-house experience and indie energy. I can’t wait to fly with them!’

Murder at 30,000 Feet by Susan Walter will be published by Firefinch Publishing in July 2026