Sisters

“They were joined at birth by the devil and the evil never left them!”

In an apartment building on Staten Island, the reporter Grace Collier (Jennifer Salt) watches through her window as her neighbor, the model Danielle Breton (Margot Kidder), kills a man. The police find nothing, so Grace hires the private investigator Joseph Larch (Charles Durning) and follows Danielle's past into territory neither expects. Brian De Palma binds Grace to a stranger across the courtyard, and she cannot stop watching her.