Four brave performers arrive with no script and not the faintest idea of what will happen. Willed on by a supportive crowd (that’s you!), through improvisation they create sketches and comic dramas that are amazingly inventive and sometimes take off into flights of surreal brilliance. Stephen Frost's Improv Allstars grew out of the popular TV show Whose Line Is It Anyway? and the Allstars troupe has played festivals all over the world.