Hi Davina
If you liked the movie of Gorky Park, you would love the book by Martin Cruz Smith. I find that books are generally better than movies, so much has to be left out when the story is filmed.

I have just read another book set in the USSR, this time back in 1953. It is called Child 44 by Tom Rob Smith, it's a murder mystery and gives a great insight into Soviet Russia. Highly recommended. It is available for Kindle thru Amazon or you can do like I did and pick it up second hand as it is a couple of years old. If you lived in Australia I could send it to you.