When Isabella dies, her wish is that Linton be raised by Edgar in Thrushcross Grange. When Linton arrives, Cathy is very happy to meet him and is very friendly towards him. However, Heathcliff is the boy's father and Edgar is only the boy's uncle. That means that Heathcliff has a legal right to have the boy live with him. Heathcliff has no real feelings for Linton but sees the possible advantages to having Linton at Wuthering Heights. It will help him fulfill his revenge on the inhabitants of Thrushcross Grange. Heathcliff plans on owning the Grange after Edgar dies and he wants to see Hindley's son working for his own son. This will be see a reversal of when Heathcliff was forced to work for Hindley.