Chorabali

A physician, an actress, a wildlife photographer, and a fashion model: four people, all suspected of crimes but never charged, sit around a table playing bridge. In the next room at a another game of cards are a police detective, a retired criminology professor, a mystery novelist, and an investigative journalist. By the end of the evening, their host Dr. Dasgupta is found murdered, his neck broken and poison in his bloodstream. Who is the killer?