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I am looking for any film titles or any imformation about an actress called Herrin Silva, a friend of mine is looking for her and he believes she may be a Dominatrix.
Thanks.

You probably mean herrin Silvia. She's a DBSM actress from Berlin, appearing only in movies from stricly DBSM lines or brands, like "Schwarze Flamme" or "SM Studio Berlin". Since this is not exactly my favourite kind of stuff, I can't tell you much more.
She has a website at http://www.dominasilvia.de/homeframe.htm.