United We Fall

 was the [Series #] episode of [Series] and the [Episode #] episode of Casualty overall.

Plot
A young dancer becomes a conscience-stricken hit-and-run driver. Could the sadistic bully who confronts her in Casualty possibly be her victim? And two competing graffiti artists try to prove their superiority by attempting to scale dangerous new heights. Mark's up to no good as he is evasive with Mike and swears Jane to secrecy, then avoids Charlie like the plague. The hit-and-run driver finds out her victim was at tramp who was taken to Queens where he died of his injuries. Two graffiti artists hurt themselves and Mark returns to announce that Queen's is to close and leaves the staff in a state of shock.