Casualty’s Flynn Byron is put in an impossible position by Siobhan McKenzie this week, as he is asked by his colleague to seriously hurt the man who attacked her. With Siobhan unable to see a way forward after her rape ordeal, she feels that the only solution is to resort to violent measures. But will Flynn follow her orders and put evil Chris Banfield in hospital?

“Flynn has been Siobhan’s biggest support since she was raped several weeks ago,” begins our Casualty insider.

“He has helped her through every difficult moment, including the terrible news that the CPS are dropping the case against Chris. Flynn would do anything for Siobhan, but that commitment is really put to the test this week…”

Siobhan was recently spooked when she spotted that Chris had returned to the hospital to cruelly taunt her, and as she became overwhelmed with fear, she asked Flynn to take vicious revenge on him.

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In this Saturday’s episode, Flynn installs a doorbell camera at Siobhan’s safety, but she rages that this won’t help – after all, CCTV didn’t stop Chris from showing up at the hospital.

Siobhan remarks that he still hasn’t done as she asked, so Flynn eventually agrees to hurt Chris, though leaves her with a chilling warning that violence lives with you forever.

Related: 7 huge Casualty spoilers for this week (14 March)

At work, Siobhan struggles to see the men of the ED as anything but predators. Cam is seriously worried about her and is horrified when Rida fills him on Chris’s creepy visit to the hospital.

Siobhan breaks the rules to give Flynn Chris’ address, but they are interrupted by Cam, who wants answers…

“Cam reaches out to Siobhan, seeing as she previously helped him through his own abuse ordeal,” our source reminds us.

“He suggests that he knows what she is going through, but Siobhan snaps and disagrees – saying that unlike him, she did everything right! Siobhan immediately knows she’s gone too far, but Cam is deeply hurt and it’s devastating to watch.”

Related: Casualty reveals major change to hospital in dramatic episode

As the shift continues, a harrowing experience with a young patient’s mother leads Siobhan to rethink everything, and she realises that combating violence with violence is not the answer.

Siobhan races to find Flynn to tell him that she has changed her mind about the attack on Chris, but the clinical lead is nowhere to be found – then an assault victim is brought into the ED! Is Siobhan too late, and has Flynn honoured his lethal promise to her?