"The Conversation" is a tense thriller that explores how paranoia can take over all aspects of everyday life once something disturbing is discovered.

Paid to eavesdrop on two people in a public place, Harry Caul ( Gene Hackman ) records the conversation and after some work produces a tape with clarity for his client. However Harry is riddled with guilt from a previous job that led to the people involved being hurt and both a woman and child murdered. This leads him to question his actions and clearly the job he is doing.

Despite colleagues, friends and suppliers of surveillance equipment looking up to Harry as one of the best in the business he clearly has lost his edge and his way. This is shown over a period of time through various actions. His flat is easily broken into by his landlord and his mail read. Harry is easily duped at a trade show by a competitor who bugs him with a pen and his girlfriend states "once I saw you up by the staircase , hiding and watching for a whole hour". Meanwhile despite his phone being supposedly unlisted both his landlord and his client have the number and to his surprise call him.

After listening many times to the tapes of the conversation, Harry believes that the two involved fear they could be hurt or even killed for their actions. However a trick is a trick or job is a job ( according to his girlfriend/ escort ) but riddled with guilt he fails to deliver. Once again he shows his unprofessionalism by allowing the tapes to be stolen ( by his girlfriend/ escort ) As the film concludes it becomes clear that conversations can be misinterpreted and may not be as obvious as first thought. Harry's paranoia is compounded even more once he discovers the truth behind "The Conversation," which results in a very satisfying ending.