Worth the long wait, right?

Written by Sally Wainwright, the hard-hitting police drama follows Sergeant Cawood while she tackles crime in her Yorkshire borough of Calderdale. You would expect such idyllic settings to be a calm backdrop and devoid of crime but Cawood’s past has a way of catching up to her.

Happy Valley series one was watched by an average of eight million viewers, with series two averaging 9.3 million viewers. The series two finale was watched by a staggering 9.8 million viewers when it aired in 2016. It’s safe to say there’s a legion of fans that this news will impress.

So what do we know about the new series? Scroll ahead for all the details we know so far, plus some dramatic new images from the much-anticipated final instalment.

Happy Valley season 3: the dramatic new trailer for the third and final instalment has landed