Series 28 is the twenty-eighth series of Casualty began airing on BBC One on 3 August 2013, one week after the end of the previous series. This series consisted of 48 episodes, the highest episode order since series 24. Midway through the series in February 2014, new titles were introduced. Series 28 featured a major change in the main cast, with only 10 of them being in the series from start to finish, in comparison to series 29 where this number was 16.