How To Write a WhyDunnit: The psychological thriller is nothing new, although its popularity is soaring. But what elements distinguish a “WhyDunnit” within the broad and varied world of crime fiction? And how do you go about writing a successful thriller where the focus is on drama rather than punishment, and where the culprits and victims take centre stage? Award-winning writers Sarah Hilary and Alex Marwood talk you through the basics from their very different perspectives. Expect insider secrets, and tips on getting published.