This article covers a subject that is part of the real world, and thus should not be taken as a part of the Holby universe.
Series 18 is the eighteenth series of Casualty. It aired from 13 September 2003 until 28 August 2004. The series sees the arrival of Jim Brodie and Tess Bateman in episode one, and on their first day they're faced with the chaos of the train crash. Episode three of the series sees the arrival of Claire Guildford, with John "Abs" Denham arriving in episode 5.
In total, the series features five exits of main characters. First is Anna Paul, who dies in episode three following the injuries she sustains in the train crash. Death also occurs in episode 19, with fan-favourite Baz Wilder dying after a car crash. Towards the end of the series in episode 40, paramedicNikki Marshall leaves, and then in the series finale Lara Stone leaves while Simon Kaminski dies.
Memorable events of the series include the train crash, Anna's death, Nikki and Jim's wedding, Baz's death, the caves expedition, Luke's inquest, Fin and Comfort's wedding, Lara and Nikki held hostage, Lara and Simon's wedding and Simon's death.