Complex sentence: Finally "59 Lyndhurst Grove" finds Susan the second wife of an architect'somewhere in South London' cheating on him with a lover and living a monotonous normal life, it also recalls a party though one much more reserved with friends and children.
Split into simpler sentences: Finally "59 Lyndhurst Grove" finds Susan the second wife of an architect'somewhere in South London' cheating on him with a lover and living a monotonous conventional life. It also recalls a party, though one much more reserved with friends and children.