The Internecine Project is a 1974 British espionage thriller film written by Mort W. Elkind, Barry Levinson, and Jonathan Lynn, directed by Ken Hughes and starring James Coburn and Lee Grant.

Plot

Renowned American economist Robert Elliot (James Coburn) who is about to be promoted to be a government adviser has also been secretly running a business espionage ring in London with the help of four operatives: corrupt Foreign Office official Alex Hellman (Ian Hendry), masseur Bert Parsons (Harry Andrews), sex worker Christina Larsson (Christiane Kruger) and scientist David Baker (Michael Jayston). He is advised to have his operatives killed by E.J. Farnsworth (Keenan Wynn), a businessman who has helped secure Elliot's appointment to prevent them from exposing Elliot's dubious activities. To avoid himself or anyone on the outside being implicated, Elliot devises and carries out a clever plan in which his four former associates will unwittingly kill each other on the same night. He visits each of his associates in turn and convinces each of them that their intended target is about to expose their activities and that they must be killed to ensure their silence.