Scott Ellisson (died 15 July 2017) was the son of Roy and Denise Ellisson. In 2017, he visited the ED to see Roy. However, after Roy's death, Scott had an altercation with registrar Caleb Knight, which resulted in Scott stabbing him to death.
In April 2017, he was involved in a fight at a local pub. His brother, Mickey, was admitted to the ED with Roy, who had sworn vengeance on the people who attacked them. Scott texted him later that day to inform him that he'd attacked the perpetrator.
Later that day, Scott and Denise arrived in the ED to visit Roy, but were soon asked to leave resus due to their offensive and inappropriate behaviour. After Roy's death, Ethan went to find them in the relatives room, but they had already made tracks back to resus, discovering Roy's dead body. Scott blamed Ethan for the mix-up and his father's death, at which point Cal urged Ethan to leave work for his own safety. Whilst Ethan was in the pub across the road, Cal had a run-in with Scott, who was planning on attacking Ethan. Scott fatally stabbed Cal, leaving him bleeding out by the ED's car park. Although Cal was taken into the ED for treatment, he died as a result of the extent of his injuries.
At the beginning of May, Ethan spoke to the police about a voicemail that Cal had left him moments before his death, warning him of Scott. PC Kate Wilkinson informed Ethan that they'd be able to bring Scott in for questioning.
Behind the scenes
It was announced in March 2017 that Will Austin had joined Casualty's recurring guest cast as Scott, the son of Roy and Denise Ellisson, who featured in the series 30 episode "Belief". Following Cal's death, Scott became the primary antagonist of the remaining part of the series until his own death around three months later. He appeared in a total of 6 episodes.