![Mad City](https://i0.wp.com/3amovies.com/wp-content/uploads/2024/05/wXb9KGqxyrAHNygRRI1HW1BhcU.jpg?resize=185%2C278&ssl=1)
Surveillance expert Harry Caul is hired by a mysterious client’s brusque aide to tail a young couple. Tracking the pair through San Francisco’s Union Square, Caul and his associate Stan manage to record a cryptic conversation between them. Tormented by memories of a previous case that ended badly, Caul becomes obsessed with the resulting tape, trying to determine if the couple is in danger.