5 has announced Eleanor Tomlinson and Matthew Lewis will star in new psychological drama The Family Secret (w/t)

5 has today announced the cast line-up for new drama The Family Secret (w/t), a 4×60 mystery series from Lonesome Pine, in association with Sphere Abacus and North East Screen. The series is now filming.

What is The Family Secret (w/t) about?

The show is described as a gripping, psychological drama that asks: what if your past isn’t what you think it is?

Eleanor Tomlinson (One Day, Poldark) stars as Amanda Blakefield, whose life is a happy one with her husband, Jimmy played by Matthew Lewis (Harry Potter, All Creatures Great and Small, A Murder Before Evensong), and their son Luke, played by newcomer James Younger. Amanda has her world shattered after she is left an enormous inheritance by a man she has neither met nor heard of before. Her life starts to disintegrate as she becomes embroiled in the world of The Worrall Family. The patriarch Martin Worrall, played by Denis Lawson (Bleak House, New Tricks), is head of a family which is bound in past secrets. As Amanda’s story leads her further and further into the Northumbrian countryside, she begins to unravel the past. And all of their lives are turned upside down.

Further cast include Rebecca Front (The Thick of It, Lewis) as Martin’s wife Fiona, with Callum Woodhouse (All Creatures Great and Small, The Durrells) as his son Anthony. Stephen Tompkinson (DCI Banks, Wild At Heart) joins as farm worker Boots Maddison, Paula Wilcox (Trying, Upstart Crow) as Amanda’s mother Linda, Danielle Walters (Chewing Gum, Kill Your Friends) as Amanda’s best friend Sandy, and Nina Wadia (Eastenders, Goodness Gracious Me) as solicitor Laura.

With filming underway, the show looks set to arrive on 5 in 2026. We’ll keep you posted.