According to film critic Kim Newman, the 1998 film Enemy of the State, which also stars Gene Hackman as co-protagonist, could be construed as a "continuation of The Conversation". Hackman's character Edward Lyle in Enemy of the State closely resembles Caul: he dons the same translucent raincoat, and his workshop is nearly identical to Caul's. Also, the photograph used for Lyle in his NSA file is actually a photograph of Caul. Enemy of the State also includes a scene which is very similar to The Conversation's opening surveillance scene in San Francisco's Union Square.[33]
A television pilot starring Kyle MacLachlan as Harry Caul was produced for NBC. It was not picked up for a full series.[34]
