"Episode Five" is the 1053rd episode of Casualty and the fifth episode of the 32nd series. It was preceded by "Episode Four" and followed by "Episode Six". The episode was directed by Paul Riordan and written by Kayleigh Llewellyn. This episode marks the return of Sam Nicholls portrayed by Charlotte Salt.
Iain is stunned when former registrar Samantha Nicholls shows up the ambulance station ready for her first day as a paramedic. The pair struggle to adjust to their new working relationship, any questions Iain has are put out of mind when he and his new partner are called to rescue a shifty woman from a car crash. Meanwhile, back at the ED, Alicia decides to play matchmaker for Jacob and Elle as they work together to care for fun-loving elderly couple Iona and Margie.
- During production, this episode's title was "Blues and Twos". However, when the decision was made not to have episode titles for the series, this name was scrapped.