Me thinks its carl , as for the posts about Zak not wanting to be the one killed off, well there's a shot of Zak and Cain in the Ambulance taking debbie to hospital so you would think they 2 would be with her through out ????

By the looks of Carl selling his shares wants out, so a if he was killed of, not only would we get rid of someone with little to do in the soap, it would leave Charity's deal stumped. Unless he signs the papers before hand, you would think he would leave his shares to his brother ??