Series 1 is the first series of Casualty and aired between 6 September and 27 December 1986. It contained 15 episodes, and featured the arrival of the original main characters.
In the series, major events included a toxic gas outbreak, Duffy being raped, Baz and Charlie beginning their affair, Megan being diagnosed with cancer, Duffy's arrest and the night shift closing. Patients admitted included an athlete with a boil on his bottom, an alcoholic tramp infested with fleas, a restaurateur with a missing finger in the strawberry sundae, two Madonna wannabes with a dodgy DIY piercing and a woman dressed as Spiderwoman.
The series featured 10 main characters and cast members, who remained on the show for the whole series. Two cast members, Clive King and Julia Watson, departed in the series finale, although the latter later returned to the show. Of the original cast, only Derek Thompson is currently still on the show.