"Child of Mine" is the 1034th episode of Casualty and the 30th episode of the 31st series. It was preceded by "Sleeping With the Enemy" and followed by "When the Whistle Blows". The episode was directed by Simon Massey and written by Kelly Jones and Jessica Ruston. This episode features a guest crossover appearance of Holby City character Mo Effanga, portrayed by Chizzy Akudolu.