"Beyond a Joke" is a celebration of comedy - one of the modern world's most dominant and compelling art forms - but it is also the story of comedy's dark side, homing in on the scandals that have surrounded some of light entertainment's biggest stars, and telling it as it is, featuring quotes from those that were there at the time. How the devoted laughter of those fans onstage never seemed to be enough for these moody, prickly, ego-driven entertainers. How they would constantly seek more thrills when the curtain came down. The offstage antics of certain comedians would make even rock stars blush. The number of comedians who have had to deal with paternity suits would make a book in itself. While "Beyond a Joke" explores the extremes of this world it also addresses another question. Are comedians naturally dysfunctional, or does the stress and pressure of the job make them dysfunctional? Ruby Wax once told me that she had builders in her house who were just as emotionally unstable as most stand-up comedians she had worked with. But they don't want to go on stage and plead with an audience to love them. There is something about wanting to make strangers laugh for a living that is intrinsically, fundamentally, strange. Stand-up is doubly peculiar in that respect. It's just the one person emotionally naked on the stage in front of maybe thousands of people. No safety net, no back up. It takes a particularly odd person to want to pursue comedy as a career. And, as "Beyond a Joke" will reveal, the behaviour of comedians once they are successful in their chosen career makes them even odder. Bruce Dessau is the only person who could write this book. From Russell Brand slashing his chest onstage to Jo Brand trashing a friend's car on the motorway, he has heard it all. Bruce Dessau knows where the bodies are buried.