Gothic fiction may have started out as a sophisticated joke, but like so many initially unlikely genres, it picked up a following, developed rules and tropes and then continued to surprise and delight readers for the next two hundred and fifty years. Gothic fiction - like traditional ghost stories - holds up a mirror to the human soul often with unflattering results. Considering its roots in desolate, crumbling castles and stormy nights, its a surprisingly versatile and slippery genre which probably explains why it takes some interesting turns when it travels across the pond. American gothic or southern gothic followed a similar evolutionary path from being a ghastly joke to taking on a life and power of its own. This week, Jules and Madeleine look at the key differences between the parent and child genres as they delve in to what makes the Southern Gothic tick like the Tell Tale Heart. Under the microscope this week - Edgar Allen Poe, Anne Rice's Mayfair Witches, Rosemary Clement Moore's The Splendour Falls and many more.

Title music: Ecstasy by Smiling Cynic