Alys is a British television drama series, created by BAFTA Award-winning scriptwriter Siwan Jones and produced by Apollo and Boom Cymru. It was broadcast on Welsh-language television channel S4C from 23 January 2011 to 30 December 2012, lasting two series. The leading protagonist of the series is portrayed by Sara Lloyd-Gregory, in a role which was specially written for her. Supporting cast include William Thomas, Aneirin Hughes, Gillian Elisa, Shelley Rees, and Kate Jarman. The story revolves around a young woman who flees Cardiff, with her 10-year-old son, trying to escape her troubled past, while her dark secrets eventually begin to surface.