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The teacher who prompted Downton star Stevens to act

9 June 2013 Last updated at 11:13 BST

Dan Stevens, star of Downton Abbey, has told The Andrew Marr Show he was inspired to act by the teacher who wrote the novel Summer In February.

Stevens added the adaption of the novel, which he has produced and appears in, was, like any film, "always a risk".

You can watch the Andrew Marr Show in full on the BBC iPlayer.