At the moment I’m re-reading my small collection of Robert Ludlam’ books. I find that they are heavy going when I first start but once I get into them I’m inclined to forget that and find that plot/story is well put together and they are well written and I enjoy them.
I recall finding a glaring mistake in one of his works some years ago and I wrote him about it; I might just as well have not wasted my time as it turned out he was dead!