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Thanks everyone for your suggestions.....I certainly have a long list to look out for now!
I am particularly fascinated by mikewith's suggestion of "Kinky Friedmad".....the name alone is enough to entice me into Smiths.
It certainly seems that Harlen Coben is a bit of a favourite and it is only recently that I discovered his books, but I think they are great. But if any of you fancy a good read, try the likes of Mo Hayder (an new English writer), Alex Kava, Tess Gerritsen, Daniel Hecht and James Patterson....all worth a go.
Anyway, I shall stop rambling for now but thanks a lot to you all for your recommendations....I'm off to the bank to take out a loan for my new library!