This article covers a real-world subject which should not be taken as part of the Holby universe.
"If Not for You..." is the 845th episode of Casualty and the 22nd episode of the 27th series.
Synopsis[]
A familiar face arrives at Holby City as Charlie's former nursing deputy Ash, now qualified as a doctor, rejoins the team as a locum - and finds himself forced to hit the ground running after being tasked to treat a patient with suspected rabies. Meanwhile, Aoife is forced to take control of her private life when ex-boyfriend Craig turns up.