The `Harry Potter` author - who went from being a single mother receiving state benefits to being worth an estimated $804 million following the worldwide success of the schoolboy wizard franchise - will be portrayed in the film by actress Poppy Montgomery, known for her role as FBI agent Samantha Spade in US TV series `Without a Trace`. Entitled `Strange Magic`, the straight-to-TV movie is to be shot in Canada after film bosses found similar-looking buildings to the ones the writer - whose real first name is Joanne - frequented in the Scottish city of Edinburgh while she was writing the books. The film will also feature details of the writer`s early life in the British West Country, as well as explaining how the `Harry Potter` concept was envisaged while the 45-year-old author was on a train journey from Manchester, North West England, to London. After revisiting her former cramped Edinburgh flat - where she penned the first book in the franchise `Harry Potter and the Philosopher`s Stone` - with a British TV crew in 2007, Rowling broke down in tears. She said: "I feel I really became myself here. This is where I turned my life around. I`d made such a mess of things. So I just thought, `Well, I want to write - and I wrote the book.` "