An experiment of psychological effects under stressful conditions in a shelter. When fifteen strangers are put into a nuclear shelter to see how long they can survive without interaction with the outside, things work out fine.
Il giorno prima is a 1987 Italian thriller film directed by Giuliano Montaldo and starring Burt Lancaster and Ben Gazzara. The story was written by Piero Angela and the screenplay was by Piero Angela, Jeremy Hole, Giuliano Montaldo and Brian Moore.