Who is she? - the ravishing young girl, sitting night after night in her box at the playhouse, to whom all fashionable London is sending bouquets. And who is this? - this wild, beautiful hoyden, riding the rutty roads of far-away Wales, ruthless and predatory; by no means loth to use her own two white arms where arms of a fiercer nature have failed to persuade. Against the chandelier brilliance of eighteenth century London, the dark romantic background of the highwayman's lair the drama is played out.