I rewatched Broadchurch this week, and one thing about the reveal of Joe as the killer struck me. How much did he really confess? We see him tell Hardy that he's the one at the shed, plus he has the phone (and there's all the other evidence, like the computer records). Then we see the recreation of the event as it was happening, with no voice over from Joe, as if he was telling Hardy what had happened. It just plays out like a flashback. Then we see Hardy questioning him about the nature of his relationship with Danny, the money, etc. So Joe confessed, right? Except that Hardy never says this specifically to anyone. He tells Ellie it was Joe and that they have him in custody. He tells Danny's family that they are "fairly certain" they have a right man. He also hedges in the press conference. Why doesn't he say someone has confessed? Is this just legal reticence to make sure he doesn't' harm the case against Joe by making definite pronouncements about his guilt? Is there some element that they're not sure of? That maybe Joe's confession isn't true? Anyway, it was just something I noticed on rewatching, maybe it doesn't mean anything.
I hope they don't go with Joe's trial as a main plot. I'm thinking there shouldn't be one, since he's not pleading innocent, but I'm not that familiar with the British legal system. I would love to see a return to the Sandbrook case. Maybe the Sandbrook killer sees Hardy in the news and moves to Broadchurch to continue to taunt him. I know they've said it won't be another murder, but that doesn't rule out kidnapping, etc. I could see a scenario where Hardy gets his operation (or his condition stabilizes) and he stays in Broadchurch. Miller is still on the police force, but with a new DI. A child is kidnapped and the kidnapper sends notes to Hardy, taunting him. This brings Hardy into the case whether he wants to or not. Miller is on his side, but he's in conflict with the new DI as they race to save the kidnapped child. Sounds good to me. I could probably write it as a fanfic.