Barbara Feldon in The Man from U.N.C.L.E. (1965).

An UNCLE translator, Mandy Stevenson, seeks excitement. Solo, feeling sorry for her, “recruits” Mandy to be a courier. In reality, she is only supposed to get Waverly more pipe tobacco. Things go askew when Mandy is given actual valuable information (a list of Thrush agents in France). UNCLE and Thrush comb New York to find Mandy.