How far would you go to keep a secret?

This is the main question of new ITV drama The Sister which will fill your autumn nights with suspense.

The four-part murder mystery is inspired by the 2009 novel Burial by Neil Cross - who is also the writer behind Luther.

It follows Nathan, who is surprised by an unwelcome face from the past.

ITV's synopsis says: "Nathan has never been able to forget the worst night of his life: a party that led to the sudden, shocking death of a young woman.

Only he and Bob, an eccentric old acquaintance, know what really happened… and they've resolved to keep it that way.

But years later, Bob appears at Nathan's door with terrifying news that threatens to tear Nathan’s world apart. Because Nathan has his own secrets now.

Russell Tovey plays Nathan

"Secrets that could destroy everything he has desperately fought to build for himself and his family."

It begins at 9pm on ITV on Monday October 26 and airs over four consecutive nights.

It stars Russell Tovey, known for roles in Years and Years, Him & Her, Being Human, The History Boys, and Flesh and Blood, as Nathan.

Bertie Carvel plays Nathan's old acquaintance, Bob. He is known for his role as Jonathan Strange in Jonathan Strange & Mr Norrell back in 2015 and played Simon Foster in BBC drama Doctor Foster.

Amrita Acharia also stars as Holly

Amrita Acharia also stars as Holly, Nathan's wife. Amrita is best known for her roles as Irri in the HBO series Game of Thrones and most recently starred as Dr Ruby Walker in ITV series The Good Karma Hospital.

And Graham is played by Paul Bazely who has starred in Emmerdale, Doctors and Holby City.

The Sister airs from Monday October 26 at 9pm on ITV.