This coming-of-rage tale is a warning to never underestimate the quiet ones. Watch now on Sky and NOW.

Sweetpea is a lesson in never underestimating the quiet ones – and we learn that quickly with Rhiannon.

Every day, she buses to and from work, and despite being mistreated or flat-out ignored by everyone around her, never complains.

But that pent up anger has to come out eventually, and it does… in spectacularly wild style.

All she wants in life is to be seen, and one thing’s for sure: people will remember her now.

Sweetpea is available to watch as a box set – and Sky is its exclusive home.

Currently, there are no plans for a second season.

The show is billed as a limited series, following the story of the book by C.J Skuse, however while the tone and some story beats remain the same, others have been changed for the TV series.

The show will be available on Starz in the US.

The main stars of Sweetpea are:

• Ella Purnell (Fallout, Yellowjackets) as Rhiannon

• Nicôle Lecky (Mood, Sense8) as Julia

• Calam Lynch (Bridgerton, Lord of the Rings: Rings of Power) as AJ

• Jon Pointing (Big Boys, Smothered) as Craig

• Leah Harvey (Foundation, A Gentleman in Moscow) as Marina

• Jeremy Swift (Ted Lasso, Downton Abbey) as Norman

• Dustin Demri-Burns (Slow Horses, Am I Being Unreasonable?) as Jeff

• Dino Kelly (Trigger Point, Alexander: The Making of a God) as Marcus

• Ingrid Oliver (Doctor Who, The Watch) as D.I. Diana St. John

Find out more about the cast and characters here.

Sweetpea is comprised of six episodes, and introduces us to Rhiannon at an extremely difficult part of her life.

After decades of being ignored, undervalued and mistreated, newspaper receptionist (sorry, executive assistant) Rhiannon coped for years by pulling out her hair, needing a wig from the age of a teenager to the age of 23.

So when her high school bully returns to town, and her life is turned upside down by a series of changes and tragedies, Rhiannon is on the brink of snapping.

All it takes is that one push too far.

Rhiannon has spent her life being a quiet wallflower – a literal doormat for everyone around her, taking comfort in a secret kill list she tots up in her head.

Living as the dormouse receptionist at the local paper, she spends her days without friends, and looking after her sick father, hoping one day to get her break to be a local journalist.

But then newcomer AJ comes in and takes the job, and she’s seething – but he seems taken with her.

After years of being tightly wound, a family tragedy sets off a chain of events that pushes her to her breaking point. Not least when her high school bully Julia returns to town with a high-flying job and hunky fiancé, Marcus, yet for some reason still seems intent on ruining her life.

Her sister proves little help either, in fact adding fuel to the fire.

When she’s crossed one too many times, Rhiannon finally takes her father’s advice and stands her ground – with horrific consequences.

After the events of the night before, Rhiannon has to think fast on her feet.

When a dead body is discovered in the river, Rhiannon takes the opportunity to get ahead at work with the help of newcomer AJ – and to discover if the murder victim was a good person or not.

Meanwhile, Julia makes a stop by her house as her sister starts the process of selling up, and former fling Craig tries to make the most of a business opportunity.

As the police start investigating the murder, Rhiannon sets her sights on a new victim.

Fresh from the adrenaline of another kill, Rhiannon gets to work putting together her biggest plan yet – with her most deserving target.

On top of that, Craig finally seems to be noticing her again after that one time they had sex.

However, her workplace is ready to bring her back down to Earth with a thud, and Julia is seemingly present wherever she goes.

After Julia steps foot into her life just that bit too far, Rhiannon feels forced into action, and makes a rash decision.

Rhiannon shocks even herself when she struggles to go through with her latest plan - so has to take control back in other ways.

But as Rhiannon’s confidence at work continues to soar, junior detective Marina makes a break in the case.

Elsewhere, Rhiannon’s “investigative journalism” leads her to the front door of Marcus, Julia’s fiancé.

What she discovers as a result has a surprising effect.

As Rhiannon finds herself bonding with a former foe, trouble is rising at work in the form of long-time senior reporter, Jeff.

Marina uses a vigil to get to know more about Rhiannon, while AJ finds himself dealing with Rhiannon’s anger when things spin out of control.

As Rhiannon struggles to keep a lid on things, someone discovers her secret – and it ends in tragedy.

With the net closing in on her, Rhiannon is forced to become allies with someone she never expected – Julie.

As Julia and Rhiannon are hauled in for questioning, their newfound friendship is put to the ultimate test.

Marina becomes more determined than ever to prove Rhiannon’s true nature, resorting to drastic measures in order to get results.

As Rhiannon comes to realise what it is she actually wants out of life, Julia begins to fear she’s jumping from one toxic relationship to the next – and decides to change her trajectory.

One decision reveals someone’s true motives.

Just when everything seems to be working itself out for the best, a last minute discovery leads to a devastating tragedy for Rhiannon.