According to Wikipedia: "Thomas Frank Mankiewicz was an American screenwriter, director, and producer of motion pictures and television, best known for his work on the James Bond films and his contributions to Superman: The Movie and the television series Hart to Hart. He was the son of Joseph Mankiewicz and nephew of Herman Mankiewicz.
Attending one of the four performances of Georgy was United Artists production head David Picker who admired Mankiewicz's book for the musical. Picker and James Bond producer Albert Broccoli were looking for a writer to do a major reworking of Diamonds Are Forever in hopes of luring Sean Connery back to play Bond. Picker suggested that Broccoli add Mankiewicz to his list of possibles. He was hired on a two-week guarantee, stayed on the film for six months and received shared screenplay credit with the original writer, Richard Maibaum.
This began a long relationship with the Bond films. Mankiewicz received sole writing credit on the next, Live and Let Die, shared credit with Maibaum on The Man with the Golden Gun, did an uncredited rewrite on The Spy Who Loved Me, and helped Broccoli and director Lewis Gilbert get Moonraker off the ground."