Nana Visitor

Nana Visitor (born 26 July 1957) played Olivia Colasanto in the Torchwood stories Immortal Sins and End of the Road.

She is perhaps best known for her role as in  from 1993 to 1999. She was married to one of her co-stars on that series, namely Alexander Siddig, from 1997 to 2001. Siddig would later participate in several Big Finish Doctor Who audio stories.