Casualty EXCLUSIVE: Kirsty Mitchell on Faith Cadogan’s tragic overdose

Casualty's Kirsty Mitchell as Faith Cadogan outside the hospital
Casualty's Kirsty Mitchell gives us the inside story on Faith Cadogan's tragic overdose. (Image credit: BBC)

Casualty exclusive with Kirsty Mitchell, who plays tormented nurse Faith Cadogan

They never do things by halves in Holby-land! With BBC One’s ever-popular medical drama Casualty taking a break from our screens after this Saturday, with the show set to return later this year, bosses are treating fans to an action-packed double-bill with four big storylines at their heart.

The first instalment Too Much Too Young centres around advanced clinical practitioner Faith Cadogan (played by Kirsty Mitchell) as her ongoing struggle with drug addiction results in an overdose. 

Here, in an exclusive interview with What To Watch, Kirsty gives her inside take on the story… 

*Casualty spoilers beyond this point*

Kirsty, what can you reveal about Faith’s plight in this week’s first episode?

“Just when you think Faith has hit bottom, she falls further. Faith’s best friend, Dr Stevie Nash [Elinor Lawless], is helping her withdraw from diazepam and ADHD medication, and believes she’s doing the right thing by lowering her dose. But it feels too quick for Faith. She turns up at the hospital and pleads with Stevie to give her something else to get her through. Stevie says ‘No’ and sends her home, but Faith spots an open, unattended ambulance…”

This is a real lowpoint for her, isn’t it?

“Yes, and there are more coming up. As she’s having a nosey around the ambulance, her ex-partner, paramedic Iain Dean [Michael Stevenson] appears. His disappointment is just too much and she can’t handle it. 

“Faith believes everything is over – her kids have gone to her mum’s, she’s probably going to lose her job, and she’s lost her man. She’s at her worst and she thinks there’s no point, so she orders drugs from her dealer. Later, she’s wheeled into the hospital and has obviously overdosed. She goes into convulsions, has a shocking and violent fit, and you don’t know if she’s going to make it.”

Iain can't hide his disgust when he catches Faith red handed.

Caught by Iain - who also later brings deathly ill Faith into the ED as a patient... (Image credit: BBC)

It must have been very difficult filming these scenes…

“You have to go to some dark and emotional places. It’s important to seclude yourself and get into that space. But there’s a weird satisfaction when you’ve emptied all your emotional boxes and done it. Elinor and Michael are both amazing to work with. On the day we filmed the overdose scenes, I think I surprised them. I’d watched a lot of videos about seizures — we like things to be as real as possible — and they were struggling to hold me down. I think they got a fright!”

Faith is a favourite with viewers, how have they reacted to the drug addiction storyline?

“The fans’ response has been mind-blowing. Because they liked Faith so much some were angry or upset or arguing with each other online — and that's what addiction does to family, it absolutely rips people apart. 

“But everyone wants her to get better, which is really lovely. Having these storylines is a big responsibility. It’s important that we show this can happen to anybody and it’s heartbreaking. I get lovely letters and messages from people who share their stories with me and I'm so honoured they’ve reached out to me. This is a disease that can take away the people you love so quickly.”

Stevie is wondering if she's to blame.

Stevie blames herself. Will she be able to live with the guilt if Faith dies? (Image credit: BBC)

If Faith survives the overdose, what are your hopes for her?

“If Faith lives, that she finds herself again and that she can fight the demons and enjoy her family, friends, work and life. But sometimes addicts get better and sometimes they don’t…”

On a lighter note… Are you excited to see the double-bill?

“I am, we watch Casualty every Saturday in my house! We all sit on the sofa and do this funny little dance when the theme music comes on – it’s now a ritual! I love seeing everyone else’s work. 

“And, when it comes to TV shows, I’m really bad at waiting [for the next episode] so, for me, this double-bill is perfect! It’s a nice treat to get two episodes at once, especially when there’s so much going on. They’ve chosen really good episodes to put together.”

Finally, your co-star Nigel Harman, AKA clinical lead Max Cristie, is part of the Strictly class of 2023. Will you also be watching him in the launch show for that this Saturday?

“Yes, we’re all supporting Nigel — we all want to go to the live shows to see him!”

Faith looking in the mirror despairing.

The last look. Could this episode spell the end for tragic Faith? (Image credit: BBC)

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If there's a Holby shaped hole in your life after this weekend's double-bill and upcoming break, you can revisit every episode of Casualty 2023 here

Casualty episode Too Much Too Young  airs on BBC One at 8.20pm on Saturday 16 September 2023 (See our TV Guide for listings). It’s followed by Switzerland at 9.10pm. Both episodes are available to watch on BBC iPlayer after transmission. 

Elaine Reilly
Writer for TV Times, What’s On TV, TV & Satellite Week and What To Watch

With twenty years of experience as an entertainment journalist, Elaine writes for What’s on TV, TV Times, TV & Satellite Week and covering a variety of programs from gardening and wildlife to documentaries and drama.


As well as active involvement in the WTW family’s social media accounts, she has been known to get chatty on the red carpet and wander into the odd podcast. 

After a day of previewing TV, writing about TV and interviewing TV stars, Elaine likes nothing than to relax… by watching TV.