"On Call" is the first and only special episode in the 30th series of Casualty. It was directed by Jack Ryder and written by Kayleigh Llewellyn, and follows on straight after the episode "Rules of Attraction".
After Taylor arrives back at the ED with a baby, Cal and Ethan attempt to secretly treat her as she has escaped from prison. However, after treating her Taylor runs off leaving Cal with the baby. Template:Series 30