"Rabbits in Headlights" is the 840th episode of Casualty and the 17th episode of the 27th series. It was preceded by the special episode "Nurse Factor" and followed by "Gone in Sixty Seconds", a special red button episode which followed the episode straight after.
This episode saw the arrival of Robyn Miller, Jamie Collier, Aoife O'Reilly and Ally Hunter. Ally was listed first in the credits making her the centric character above the other three. Coincidentally, she is also the first of the four to leave the show and has the least appearances overall. Of these, only Robyn remains in the cast today.
Ally, Robyn, Jamie and Aoife, four student nurses on their first day of work placement in ED, are quickly partnered with their mentors—Charlie, Linda, Lloyd and Fletch. A coach crash involving 30 children and their teachers determines that normal induction is abandoned as they are thrown in at the deep end. The students have the anguish experienced in an overwhelmed accident and casualty department first-hand—death, dealing with bereaved relatives, organ donation and patient confidentiality. Ally suffers more trauma than the other three.