Heidi Thomas is a playwright, television executive producer and screenwriter, whose credits include: the 2010 continuation of the popular series Upstairs Downstairs, and period piece Lilies (2007), alongside adaptions of Jennifer Worth's Call the Midwife, Elizabeth Gaskell's Cranford, and a film version of Dodie Smith's I Capture the Castle.She is married to actor Stephen McGann.Internet Movie Database page:
http://www.imdb.com/name/nm0858912/
