Fiona Watt's stone-wall dominated set looms up sternly, transforming alternately into a Roman ruin or the farmer's cottage where Petey, his wife Ida, and their daughter Christine reside. Firmly rooted in rural realism, the production seems initially unremarkable - until the sexual chemistry between Suzanne Donaldson's strident Christine and John Mackay's wirily nervous Euan smashes though the politeness between the farmer's family and their unwilling visitors.