Cinnamon Carter was a member of the I.M.F force and leader in one episode, "Action!". Her primary role, in her own words, was to "do what comes naturally."[1] She acted as various characters required by the jobs, often distracting male enemies with her sultry looks and seductive manner. She was skilled in unarmed combat, capable of disabling men larger than her.[2]
She was portrayed by Barbara Bain, who left after Season 3 with her husband Martin Landau (who played Rollin Hand). The couple continued acting together, most notably in the British sci-fi TV series Space: 1999.
As far as the character of Cinnamon Carter, it is unknown whether she retired or moved on to some other work, however in the 1990s Bain reprised the role for an episode of Diagnosis Murder.