Set over three days in 1661, Trespasses is inspired by the judge's own account of one of the tiny handful of witch trials that ever took place in Ireland. It asks why a servant girl who fell into fits would have put the blame on an old beggarwoman - but also, more timeless questions about the clashing cultures that have to share a small island country. Trespasses is about faith and superstition, politics and class, sadism and love.