Modesty Blaise, a secret agent whose hair color, hair style, and mod clothing change at a snap of her fingers is being used by the British government as a decoy in an effort to thwart a diamond heist. She is being set up by the feds but is wise to the plot and calls in sidekick Willie Garvin and a few other friends to outsmart them. Meanwhile, at his island hideaway, Gabriel, the diamond thief has his own plans for Blaise and Garvin.
Monica Vitti
as Modesty Blaise
Terence Stamp
as Willie Garvin
Dirk Bogarde
as Gabriel
Harry Andrews
as Sir Gerald Tarrant
Michael Craig
as Paul Hagan
Clive Revill
as McWhirter / Sheik Abu Tahir
Alexander Knox
as Minister
Rossella Falk
as Mrs. Fothergill
Scilla Gabel
as Melina
Michael Chow
as Weng
Saro Urzì
as Basilio
Tina Aumont
as Nicole