Sisters

While participating in a party for children in a clinic administrated by Dr. Philip Lacan, Dr. Dylan Wallace witnesses an incident between the host and the Spectator reporter Grace Collier and he has a conversation with Dr. Lacan's assistant and former wife Angelique Tristiana. Her offers a ride to her to downtown and they have one night stand in the apartment of her twin sister Annabel. On the next morning, Dr. Wallace buys an ice-cream cake to celebrate the birthday of the sisters and returns to the apartment. Meanwhile the snoopy Grace that wants to expose the experiments of Dr. Lacan breaks in his office and finds that Angelique's apartment is monitored by many surveillance cameras. She witnesses Angelique stabbing Dr. Wallace to death and she calls the police. However the detectives do not find any evidence indicating a murder in the flat. Grace goes further in her investigation and discovers the hidden secret about Dr. Lacan, Angelique and herself.