Julie Walters stars in this Channel 4 biopic based on the life and career of late politician Mo Mowlam. The film charts Mowlam's rise to prominence in Tony Blair's New Labour government and her role in helping to bring the Good Friday peace agreement for Northern Ireland to fruition in 1998, while recovering from treatment for a brain tumour first diagnosed in 1997. Mowlam died in 2005 aged just 55.