Complex sentence: Mr Earnshaw's son Hindley (Jimmy Johnston) formed an instant antipathy to the wild and rebellious Heathcliff, whereas his sister Cathy (Helen Hobson) found in Heathcliff a suitable soul mate, whose fiery passions fed her romantic nature.
Split into simpler sentences: Mr Earnshaw's son Hindley (Jimmy Johnston) formed an instant antipathy to the wild and rebellious Heathcliff. His sister Cathy (Helen Hobson) found in Heathcliff a suitable soul mate, whose fiery passions fed her romantic nature.