Walter Scott prefaces his tale with a register of a notorious seventeenth-century tragedy: the real Janet Dalrymple, secretly pledged to Lord Rutherford, was forced by her powerful mother, Dame Margaret, to wed David Dunbar of Baldoon; the bridal night ended in frenzy, blood, and death (1669). Contemporary reports appealed variously to witchcraft, demonic agency or maternal coercion, and ballads preserved the story’s dates and details. Scott declares he will translate, not portrait, the incident—relocating events and altering characters to fashion a fiction of similar moral force.

That fiction is framed by an authorial persona, Peter Pattieson, assisted by the painter Dick Tinto, whose sketches of an Elizabethan chamber and local lore about Lammermoor and Fast Castle prompt the tale of Ravenswood. Into this atmosphere of decay and tradition Scott sets the impoverished heir, Edgar, Master of Ravenswood (Wolf’s Crag), whose proud, implacable honour collides with the newly triumphant household of Sir William Ashton, lately Lord Keeper, and his politic, domineering wife. Their daughter Lucy—gentle, romantic, pliant—is caught between filial duty and passionate feeling for Edgar.

The opening episodes establish political rancour, legal manoeuvre, and personal grievance: after Edgar’s father’s funeral, a dispute over burial rites provokes the Ashtons and intensifies Edgar’s resentment. A later rescue—Edgar freeing Sir William and Lucy from a wild bull—produces a precarious reconciliation when a storm forces the Ashtons to accept refuge at Wolf’s Crag; hospitality and mutual courtesy awaken attraction despite the families’ enmity. Old retainers—Alice and Caleb Balderstone—voice warnings: fidelity to the old house and superstitious portents (Kelpie’s flow, Thomas the Rhymer) presage danger.

Their intimacy deepens at the Mermaiden’s Fountain, where Edgar and Lucy exchange vows and tokens. Political and selfish forces, however, conspire to sunder them. The Marquis of A—— pursues legal redress to restore Ravenswood’s fortunes; Sir William temporises while Lady Ashton, intent on advancement and humiliation of the Ravenswoods, plots otherwise. Opportunists—Bucklaw, Captain Craigengelt—scheme to secure Lucy; Caleb and others stage artifices (a sham conflagration) while Lady Ashton intercepts letters, invokes clergy and parental authority, and exploits superstition to annul the secret pledge.

Under maternal pressure and occult insinuation Lucy is coerced into renouncing Edgar and contracting with Bucklaw. The wedding, however, culminates in catastrophe: Bucklaw is mortally stabbed; Lucy is driven to frenzy, lapses into convulsions and dies. Edgar confronts the household, accepts a duel, and disappears—tracks suggest drowning in quicksands. Caleb dies brokenhearted; the Ashton family declines, Lady Ashton outwardly unrepentant.

Across these episodes Scott juxtaposes private honour and passion with legalistic opportunism and social ambition, showing how manipulation of law, religion and superstition destroys a pledged love and accelerates the decay of old loyalties and houses.