"Accidents Happen" is the 42nd episode of Casualty and the 2nd episode of the 4th series. It was preceded by "Chain Reaction and followed by "A Grand in the Hand". The episode was written by Jeremy Silberston and written by Bill Gallagher.
Cyril blames Charlie when Sally gets the job, ahead of him and refuses to talk to him during the shift, but does congratulate her on her promotion. When a group of Americans arrive, he finds himself being offered the chance of a career in the States, which cheers him up and Charlie has to reprimand Jimmy again for slacking off. Beverley Miles falls down the stairs and Eric who is mentally handicapped manages to raise the alarm and goes to the hospital with her, but when her husband Colin arrives, he blames him for the accident. She has to have an emergency operation, performed by Andrew Bower to save her life. Megan tries to help an old man after being reprimanded by Duffy, for failing to see his injury was a dog bite. He confides in her that since the death of his wife, he finding it hard to cope and his dog attacked him because it was hungry. He tells her he has three sons and refuses to be a burden on them and when a woman from the Social Services arrives.