Anna Maxwell Martin and Rachael Stirling have been cast as sisters in 'Hollington Drive'.
The 'Motherland' and 'Wild Bill' actresses lead the way in the new four-part ITV thriller, which comes from screenwriter Sophie Petzal and is currently filming in Wales.
Anna and Rachael star as Theresa and her older headteacher sibling Helen respectively, with their partners Fraser and David set to be played by Finding Alice's Rashan Stone and 'Dublin Murders' actor Peter McDonald.
In a press release, BBC said: "The sisters appear close and their families enjoy spending time together.
"We open on a warm, balmy evening, barbecue sizzling on the patio, the perfect family setting. The atmosphere is chilled, as they lounge in Theresa and Fraser’s perfectly manicured garden.
"Apart from Fraser’s brother Eddie (Ken Nwosu, 'Sticks and Stones') winding everyone up, there’s hardly a hint of tension, but this is the calm before the storm.
"When Theresa’s ten-year-old son, Ben (Fraser Holmes) asks to play in the nearby park with his cousin Eva (Amelie Bea Smith), the adults begin to niggle.
"Fraser is relaxed and is fine for them to go, but this doesn’t help Theresa’s fears of foreboding and growing feelings of anxiety."
The kids don't come back in time, and when Theresa finds them on the edge of a woodland area they look to be fighting, and she senses something terrible has happened.
Later that evening, their distraught neighbour Jean (Jodie McNee) reveals her 10-yearold son Alex has gone missing.
Sophie Petzal commented: “I am absolutely thrilled to be working with Jonathan Fisher and West Road Pictures once again to bring our project 'Hollington Drive' to ITV. We hope it will keep audiences gripped to their televisions.”
Jonathan Fisher added: "We’re so excited to have started filming on 'Hollington Drive', and to have attracted a top-rate cast led by the exceptional Anna Maxwell Martin and Rachael Stirling.
"We can’t wait to share this captivating and surprising story with the ITV audience.”