Kelly Macdonald is a mother whose unhappy marriage has a darker secret behind it in The Radleys. The Scottish actor quickly made a name for herself with her first role in Danny Boyle's Trainspotting and has since found acclaim for her work on both the big and small screen, including the satirical mystery Gosford Park, her Emmy-winning role in The Girl in the Caf and both Golden Globe and Emmy-nominated turns in Boardwalk Empire. Macdonald is also known for voicing Merida in Pixar's Brave, having also reprised the role in Ralph Breaks the Internet.

Macdonald stars in the movie adaptation of Matt Haig's The Radleys as Helen, the matriarch of the titular family and secretly a vampire alongside her husband, Peter. Despite their nature, though, Helen and Peter have been working to abstain from drinking blood in order to give their family a normal life, with the...