Shame

"Shame" is the 980th episode of Casualty and the 20th episode of the 30th series. It was preceded by "Black Alert" and will be followed by "The Good Life". It was directed by David Beauchamp and written by Asher Pirie. This episode will feature the first appearance of paramedic Mercedes Christie, portrayed by Hannah Spearritt. It's unknown whether Spearritt will begin appearing as a series regular or just as a guest star.

Synopsis
Office prankster Murray makes use of a fake scratch card to trick his colleague Claire into thinking she has won £100,000. Buoyed by her supposed success, Claire quits her job and prepares to claim her winnings, but a nasty mishap takes her to the ED, where she eventually discovers the truth, and decides to take advantage of her situation to get her own back.

Meanwhile, Noel is mugged by a mysterious assailant, while Big Mac cowers nearby. When Noel regains consciousness relatively unharmed, he assumes Mac drove the attacker away, and proclaims him a hero. Elsewhere, Ethan's frustration over the restrictions placed on him by the system causes him to take drastic action.