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As a writer there's a special embarrassment that goes with a script that goes horribly wrong. Like a sexual encounter that ended badly you don't want to think about it and you resent having people bring it up in public. Still sexual failure doesn't (in my case) generate residuals so I'm not going to complain too loud.
Here's a good review and here's a bad review and here's the relevant page at Amazon.co.uk. Why not buy it and make up your own mind - at the very least you can revel in the near future zeerust and Jean Marsh's frocks.