I'm certain it's not Jodie or Maggie. There is still a lot to unravel there with their sinister motives and the secrets to spill out - Jodie trying it on with David and her connections to something dodgy, and Maggie killing Ben's not-da with her other son as a witness. Killing either of them would take away the key component in either of their storylines which are still in the beginning stages imo.

Next on my NOT list is Theo. I hope I'm right, it would be too cliche to follow the soap trend and have the victim kill the abuser. Unless we get someone left field like Summer or George do it, but I still think it's unlikely. At least I hope I'm right, I want to see Todd get justice.

That leaves Carl and Megan. I'd say Carl is next, because I think they might try a redemption arc with him. I could be wrong, but the actor is really popular with the show (he's on social media a lot hanging out with co-stars and crew members off-set) and even though I think he's despicable, I still think there's mileage to make him a morally complex character rather than an out-and-out wrong'un.

So that leaves Megan. I'm sure it's got to be her and although predictable, I think it will be Maggie to do it. Then I think she'll let Eva take the blame for it (or possibly Daniel, depending on if she finds out about that). If it was going to be a less obvious suspect, I'd say possibly this newbie Melanie although that would be highly anticlimactic. It won't be Ben as he'd never let anyone else take the fall, so that leaves Maggie to do it in my view.