Board Thread:Casualty Spoilers/@comment-25050081-20170323221045/@comment-29629693-20170324225831

Yeah, I know he could be talking about a patient, but in the trailer, Cal can be heard saying, "If today has taught as anything, it's that life's too short". It could be at the funeral for Ethan. Plus near the end (just before we see the covered body) we can see someone alone in the ambulance station. If this was the returning character, it could be Sam and this would make sense as she would replace Ethan as registrar.