Murder ballads and psychological thrillers? Surely it was only a matter of time before a writer put themselves under the influence of Nick Cave. My guest this week used music as his portable aural office, banishing the sounds of his fellow rail passengers on his daily commute to immerse in shady characters. Sometimes he scared the real-world folks in the carriage too. He is Ruby Barnes and he’ll be here on Wednesday talking about his novel The Baptist and its Undercover Soundtrack.