The Vengeance of She – 1968 – An equivalent to Modesty Blaise?

The main reason I searched for The Vengeance of She is that the screenplay was written by no other than Peter O’Donnell! He is, of course, best known for his character Modesty Blaise of whom he wrote several books. I think that Modesty Blaise is best known in comic strip format though. At least it is for me. I have never read any of the books even though I’d love to get my hands on...