Dead End (1977)

A young woman is living with her mother at the end of a dead-end street. The young woman notices that a man standing in the street stares into her room every day. After a while, she gets used to his presence and falls in love with him. As the mysterious man slowly enters the girls household and becomes a friend. However the girl finds that the man is a government agent sent to arrest her brother who is a political activist hiding from the government.