"The Stag, the Dog and the Sheep" is the 1025th episode of Casualty and the 21st episode of the 31st series. It was preceded by "Crazy Little Thing Called Love" and followed by "You Are Your Only Limit". The episode was directed by Seán Gleeson and written by Jeff Povey. This episode features a guest appearance from Ian Bleasdale as Josh Griffiths. The events of the episode primarily take place on 29 January, with flashbacks and events from the night before taking place on 28 January.