This is the first in a new series based in a trauma unit and set in real time, writer Jed Mercurio promises that it will be "ultra-adrenalised…graphic…very vivid". We're not sure if that helps you to understand what you might be letting yourself in for, but it could be exciting or incredibly grim, is what we're guessing. The focus is not really on the patient in each episode, but rather on the procedure, as the team of doctors race against the clock to save lives, but don't always succeed. Either way, it will be worth a watch as it promises to be hugely realistic and quite tense, with a slight 24 vibe. You won't know until you watch it, sure.