Ellen Zitek is a fictional character from the BBC medical drama Casualty, played by actress Georgina Bouzova. She first appeared in the series nineteen episode "Out With a Bang", broadcast on 18 September 2004. Bouzova was originally signed to appear in the show for four months. The character proved popular with viewers and her contract was renewed. Ellen is characterised as a charming and intelligent woman who has a manipulative side. She can be nasty and scheming, traits which initially worried Bouzova who presumed the public would dislike her. Ellen is originally from Ukraine and arrives in Holby City to work as a nurse. She was introduced as the stepsister of Nina Farr.