Mr Selfridge star and former Coronation Street actress Katherine has been cast alongside James Murray and Patrick Robinson in the three-part 'domestic horror' drama.
The story focuses on a 17-year-old boy, known only in the drama as HIM (played by newcomer Fionn Whitehead), who is caught in the limbo between childhood and adulthood. But he's also trapped in a limbo between the two homes of his divorced parents, mum Hannah (Katherine Kelly) and dad Edward (James Murray), each now remarried with new families.
Patrick Robinson plays step dad Victor, Simona Brown as stepsister Faith and Lucy Liemann as step mum Beth.
HIM focuses on life's major themes: the painful breakdown of relationships, love, loss, betrayal and passion. At the heart of the story is rite of passage from boyhood to manhood and his struggle not to lose humanity and control supernatural power.
Producers say HIM is "engaged in a primal struggle to contain the terrifying secret of a supernatural power he inherited from his grandfather". He is urged by his grandmother to only use his powers for good, otherwise it could end in tragedy.
Elsewhere, HIM also finds himself drawn to his stepsister Faith, with both knowing that their mutual attraction could rupture the family.
HIM, produced by Mainstreet Pictures, is due to begin filming in London later this month.
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