Theatre reviews: Beneath The Dust, Dumfries | The Rocky Horror Show, Playhouse, Edinburgh | Prism, King’s Theatre, Edinburgh

SOMEWHERE in Dumfries town centre, there stands a house that, for many years and even centuries, was something of a mystery to local residents; perhaps the headquarters of some secret society that wished to remain unknown. So when we gather at the doorstep on a dark and moonless Hallowe’en, surrounded by flaming torches and hooded attendants, the scene is already set for an unusually powerful show for the season of ghouls and ghosties; and once we file inside, five by five, things only become more tense and uncanny, as we are initiated and led into – well, into what kind of gathering, or what manner of gorgeously gilded dinner?