A stunning home. A happy family. A dark secret. The newly released official trailer for Sky’s The Staircase hones in on the idea of secrets bubbling away beneath the façade of a perfect family – and we are so here for it.

When Kathleen Peterson (Toni Collette) is found dead at the bottom of her staircase, questions start to whir – could it be an accident? But somehow, 35 cuts and bruises don’t point to an accidental death. Soon, suspicions begin to mount towards her husband, Michael (played by Colin Firth).

In the trailer, it’s clear to see that family is everything in this drama but the idyllic home that Kathleen and Michael tried to portray may have been hiding darker secrets. “It was 25 years ago and nothing happened. You know there wasn’t even any blood?” Michael tells an army of French documentary makers.

“Well, there was some blood Michael,” his ex-wife says. His exasperation is palpable and with such a large family, some of his children start to think that maybe their father had something to do with Kathleen’s death after all. If the trailer’s anything to go by, this Sky drama will keep us guessing right up until the very last moment.

And we finally know when it’s set to land on our screens. Set your timers because The Staircase is dropping very, very soon on 5 May.

Watch the new trailer for yourself here:

Sky’s The Staircase: we finally have a release date for the chilling true crime drama, which stars Colin Firth and Toni Collette