New episodes of the six-episode series will then follow weekly, with the linear broadcast taking place each Monday at 10pm ET/PT on BBC America. Sarah Lancashire reprises her iconic role as Sergeant Catherine Cawood, joined by Siobhan Finneran as her sister Clare, Rhys Connah as her grandson Ryan, and James Norton as her nemesis, the murderer and sex offender Tommy Lee Royce.
Ishia Bennison is also back as Joyce, Catherine's civilian police officer co-worker, who has become a real fan favorite. The multi-award-winning series written and created by Sally Wainwright is set and filmed in Yorkshire's Calder Valley.
The official plot synopsis for the final season teases: "When Catherine (Sarah Lancashire) discovers the remains of a gangland murder victim in a drained reservoir, it sparks a chain of events that unwittingly leads her straight back to Tommy Lee Royce (James Norton).
"Her grandson, Ryan, is now sixteen and still living with Catherine, but he has ideas of his own about what kind of relationship he wants to have with the man Catherine refuses to acknowledge as his father. Still battling the seemingly never-ending problem of drugs in the valley and those who supply them, Catherine is on the cusp of retirement."
In the meantime, you can catch up with season one of Happy Valley on Acorn TV now, then watch season two from April 3. BBC America will air a season one marathon from May 8-10, with two episodes nightly from 11pm ET/PT, and a season two marathon from May 15 to 17. Once again, two episodes will air nightly from 11pm ET/PT.
You can also read our spoiler-free feature on 10 things you may not know about Happy Valley, and check out adorable footage of Sarah Lancashire discussing the show with Camilla, Queen Consort of the United Kingdom.
Are you hyped for the final season of Happy Valley?