Act One. Normanno and others search the castle gardens for an intruder. They believe it is Edgardo on his way to meet Lucia. Enrico has marriage plans for Lucia, and vows to end her affair with his mortal enemy. Lucia waits for Edgardo in another part of the garden. She says she has seen the ghost of a maiden who died for love. Her maid believes this is a bad omen. Edgardo enters. He tells Lucia he must leave for France on family business. He hopes to make his peace with Enrico and marry Lucia. They exchange rings.