Casualty spoilers follow for Saturday’s episode (April 12), which is available to watch now on streaming service BBC iPlayer and hasn’t yet aired on TV. This article contains storyline details that some viewers may prefer to avoid.

Casualty has confirmed who has been stalking Stevie Nash in the show’s latest episode – and it’s a familiar face.

There has been heartache for Stevie in the current box set ‘Internal Affairs’, as she found out she was pregnant but then discovered that it was actually a cyst on her ovary.

While she waits for the results of her tests, she has been faced with another ordeal. A mysterious stranger has been stalking her both at work and home and has even been inside her flat.

In this week’s episode, Stevie was woken up by the police raiding her property after receiving an allegation that she was been manufacturing illegal substances.

She was treated like a criminal, although the officers didn’t find any drugs, and Stevie realised that her stalker must have called the police on her. Stevie expressed her concerns to the Detective Inspector, and he suggested she report the harassment.

At work, Faith suggested that Stevie’s ex Marcus might be the stalker, but she confirmed that he now lives in New York, so it couldn’t be him.

Later in her shift, Stevie got a notification on her phone showing her that a man dressed in black had just entered her flat.