A new three-part psychological thriller The Replacement scored by Dan Jones begins Tuesday 28 February on BBC 1.

Starring Vicky McClure (This Is England, Line Of Duty) and Morven Christie (Grantchester, The Missing series 2), the plot, which twists and thickens as the series goes on, is based around a woman who goes on maternity leave only to become increasingly paranoid about the motives of the person covering for her.

Click here for the trailer.