Broadchurch actress Vicky McClure has promised that viewers will be "shocked" to find out who killed Danny Latimer, and bookies have made detective Ellie Miller's husband Joe the favourite to be the culprit.
Vicky plays journalist Karen White in the show, and has backed up her co-stars' claims that nobody on set knew who the killer was until the very last minute.
"Every day I get asked who the killer is – but I’m never going to say," she told the Sunday People.
Vicky McClure in Broadchurch (ITV)
"We didn’t know until the end of the shoot. We filmed it not knowing, which was great because it added to the tension on set.
"When we did find out it was a big surprise. I think people are going to be shocked when it is revealed."
Joe Miller, the husband of Olivia Coleman's character Ellie, has become the evens favourite to be unveiled as the murderer, with 1/1 odds.
The Miller family in Broadchurch (ITV)
Their son Tom is joint second favourite at 4/1, with Jack Marshall - who met a sticky end at the end of the last episode - also at 4/1.
Nige Carter and Susan Wright are both on 7/1, whilst Danny's mum Beth, Rev Peter Coates and even DI Alec Hardy are all on 8/1.
Who do you think did it?