Happy Valley viewers are certain Catherine Cawood won't be killed off thanks to spotting her hidden 'defender'.
Ahead of Sunday night's big finale airing on BBC One, fans of the crime drama have been sharing their theories and predictions online regarding how Catherine's (Sarah Lancashire) final showdown with evil Tommy Lee Royce (James Norton) will go down.
While some Happy Valley fanatics think copper Catherine may meet a grisly end, several eagle-eyed fans have spotted clues from earlier episodes that hint the grandmother will make it out alive.
Not only do some fans think a supporting character will play a major role in ensuring Catherine's safety, they've also worked out how one of the police officer's treasured possessions will save her life.
Alison Garrs (Susan Lynch) will play an integral part in Catherine and Tommy's possible deadly battle on Sunday night fans predict, thanks to the former farmer returning for the third and final series following her release from prison.
Happy Valley's Clare's death 'confirmed' after tragic final exchange with sisterAlison has a huge storyline in the second series of the crime drama, thanks to killing her son Daryl Garrs (Robert Emms) after discovering he had been murdering sex workers.
She was handed a prison sentence and served her time, before appearing on our screens once again as a free woman in series three - working as a mechanic after training while behind bars and was fixing up Catherine’s truck.
Alison's motor skills may have a deeper meaning when it comes to how Happy Valley will conclude, according to some fans.
"My #HappyValley theory is that Alison Garrs (Susan Lynch) will play a massive part," one fan began on Twitter when sharing their finale prediction.
"No way is she just working on Catherine’s Defender. I think she’ll actually turn out to BE Catherine’s defender and save her life! She believes she owes Catherine and she’ll save her life!"
Another added a similar theory ahead of Sunday's eagerly-anticipated conclusion, tweeting: "I think the car with the dodgy clutch owned by the character Alison Garrs in #happyvalley3 has a major role in the finale-my brain with its theories in the early hours drives me crazy! #HappyValley #sleep #thoughts #theory #backtosleep."
One Happy Valley fan is convinced Tommy may ruin Catherine's retirement plans and "ride off in her big Himalayas car" as the crime drama comes to an end this weekend.
"Not me lying in bed searching 'Double de-clutching' cos I’m so sure Alison’s clutch has a vital role to play in the “Revenge is a dish best served cold” dénouement #HappyValley," another fan mused on Twitter after the penultimate episode of the crime drama.
Irish actress Susan, who plays former farmer Alison, is a regular face on some of the nation's favourite TV shows thanks to appearing on series like Sex Education, ITV drama Unforgotten and Downton Abbey.
The mum-of-one, 51, also has links to another popular fictional police series - Line of Duty!
Happy Valley fans spot hidden detail hinting at Ryan's plot to take Tommy downAlison and Craig Parkinson - who played Matthew 'Dot' Cottan in the BBC drama - were married 12 years before 'quietly splitting' in 2019.
*The final episode of Happy Valley airs this Sunday at 9pm on BBC One