Cathy grieves Linton's removal until memory fades; at intervals she still asks when he will return, but before she sees him again his face has grown so dim she will not recognize him. Gimmerton gossip and the Heights housekeeper paint him as a faint-hearted invalid whom Heathcliff barely tolerates behind closed doors: secluded, coughing, demanding fires in summer and sweets year-round, quarreling with Hareton when pity brings them together. Edgar still asks after the boy but will not risk fetching him.
On the twentieth of March, Cathy's sixteenth birthday and the anniversary of her mother's death, Edgar spends the day alone in the library and kirkyard. Cathy coaxes Nelly on a moor walk toward game nests, then leads her two miles past the park limits onto Heathcliff's land. Heathcliff intercepts them at grouse nests, insists they rest at the farmhouse, and reunites Cathy with a taller Linton she barely recognizes. He tells Nelly his design honestly: that the two cousins may fall in love and marry so he controls both estates.
Inside, Cathy charms Heathcliff briefly while Linton performs weakness and spite toward Hareton, who cannot read the inscription over the door that bears his own name. Heathcliff mutters that Catherine will send the boy to the devil and covets Hareton's strength beside Linton's paltriness. He forbids Cathy to mention the visit to Edgar; she promises to bring her father, but Linton asks her to return once or twice a week instead because four miles would kill him.
Cathy blurts the visit to Edgar next morning. He sketches Heathcliff's conduct to Isabella and forbids further contact or letters, though Cathy remains half convinced her uncle was cordial. She cries not for herself but because Linton will wait disappointed; when Nelly refuses even one note, the first letter goes out through a milk-fetcher anyway. Weeks of smuggled correspondence follow until Nelly raids the library drawer, intercepts another message at the garden wall, and burns the pile in the kitchen while Cathy screams for one scrap to keep. Nelly ends the channel with a formal refusal; Edgar still believes separation protects his daughter while the attachment survives the fire.
Coming Up in Chapter 22
Late harvest chill settles on Edgar's lungs and confines him indoors all winter. Cathy, already dull since her romance with Linton was broken off, loses his companionship; Nelly can spare only hours at the Heights while father and daughter wait out the cold.