I Know That You Know That I Know (Italian: Io so che tu sai che io so) is a 1982 Italian comedy-drama film directed by Alberto Sordi, who is also the co-protagonist with the Italian actress Monica Vitti. It was entered into the 13th Moscow International Film Festival where it won a Special Prize. The film's sets were designed by the art directors Lorenzo Baraldi and Massimo Tavazzi. It was shot on location around Rome.
Cast
Alberto Sordi as Fabio Bonetti
Monica Vitti as Livia Bonetti
Isabella De Bernardi as Veronica Bonetti
Salvatore Jacono as Cavalli
Giuseppe Mannajuolo as The Detective
Ivana Monti as Valeria
Micaela Pignatelli as Elena Vitali
Claudio Gora as Ronconi
Pier Francesco Aiello as Marco
Napoleone Scrugli as Mirko
Cesare Cadeo as Reporter
Sandro Paternostro as himself
Gianni Letta as himself