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.
With the evil, bleach-blonde, "Gabriel" (Dirk Bogarde) on the trail of a £50m cache of diamonds, it falls to the beleaguered British secret service to come up with some sort of plan to thwart him diverting them from their intended purpose. With their previous agents being less than competent (or alive), they alight on the dazzling charms of this eponymous character (Monica Vitti) who, together with her dapper partner "Garvin" (Terence Stamp) are to be recruited for this perilous task. It's all about oil concessions you see, and the loot is destined to prop up an Arab sheikhdom so suffice to say there's duplicity a-plenty over the next two hours as this sultry but savvy woman has her work cut out avoiding capture, torture (well, sort of) and betrayal. It's actually not that bad, but it's far too long and slow in too many places. The espionage elements could have been fun - it's got shades of "Thunderball" (1965) to it with a super-villain and his super-yacht living on an island amidst the beautifully azure sea with his black-clad henchmen, but Bogarde exudes a rather too annoying smugness as if to say "hey, I'm getting paid for this!". There's a bit of a twist to the tale towards the conclusion as it becomes clear that our spy and our sheik (Clive Revill) might have something unexpected in common, too, and there's a solid cast behind this as, for most part, it's tongue is firmly enough in it's cheek to make it watchable, if just a little predictably dull.
