Plot summary

Undoubtedly, guilt-ridden Harry Caul, a solitary San Francisco surveillance expert devoted to neutrality, is at the top of his game. Playing his cards close to the chest, Caul undertakes the routine task of monitoring the conversations of a young couple in San Francisco's bustling Union Square, unaware that a shocking truth hides in plain sight. As Harry assembles a master tape containing crucial evidence, his dormant conscience awakes, and subtle hints of murder send him spiralling into a sinister web of secrecy, paranoia, and self-destruction. Is there, indeed, something horrible underneath the conversation?—Nick Riganas