Karen Gillan has amassed legions of fans from her beloved sci-fi roles in Doctor Who and Guardians of the Galaxy, so there's a lot of interest around her new starring vehicle Gunpowder Milkshake.


Taking cues from the blockbuster John Wick franchise, the movie sees Gillan take on the role of accomplished assassin Sam, who turns against criminal organisation The Firm when they target a young girl.

On a mission to keep the child safe, Sam reunites with her estranged mother and fellow hit-woman Scarlet, as well as her associates at the Sisterhood of Assassins played by Angela Bassett (Black Panther), Michelle Yeoh (Star Trek: Discovery) and Carla Gugino (The Haunting of Bly Manor).

Hoping to stand up against the action genre's biggest names, Gillan has revealed that the training for Gunpowder Milkshake was intense, especially as it came mere weeks after filming wrapped on Jumanji: The Next Level.

"There was boxing, choreography, learning how to fire guns, gun safety and changing ammo really quickly like I’ve done it a thousand times," she told The Hollywood Reporter. "There was everything you could think of to get me ready for the film in time."

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Complicating matters is the variety of tools Sam uses in the film to carry out her deadly work, relying not just on guns but virtually any item she can get her hands on.

Gillan added: "Even Sam probably finds guns a bit boring. She likes to get the practice in with all different types of weapons, especially when the goons are coming after her... So she’s fighting with suitcases, a giant tooth and all sorts of different things that she can use as weapons. I just like the creativity of that. It’s a little more original."

If that has piqued your interest, read on for all your essential information about the action flick, including the Gunpowder Milkshake's UK release date, cast and trailer.

Gunpowder Milkshake release date

Gunpowder Milkshake will be released in the UK on Friday 17th September, with a simultaneous launch in cinemas and as home entertainment via Sky Cinema/NOW.

In the United States, the film has been out for quite some time, having launched as a Netflix original on Wednesday 14th July, but the popular streaming service will not be hosting the movie on its UK platform.

Gunpowder Milkshake cast

Gunpowder Milkshake

This action thriller features a star-studded cast, led by Doctor Who and Marvel star Karen Gillan as Sam, an assassin who flees from crime organisation The Firm after taking a young girl under her wing (played by Big Little Lies star Chloe Coleman).

Game of Thrones icon Lena Headey plays Sam's estranged mother Scarlet, who is involved in the same deadly trade as her daughter, being a key figure in a group known as the Sisterhood of Assassins.

The secret society counts Black Panther's Angela Bassett (Anna May), Shang-Chi's Michelle Yeoh (Florence) and The Haunting of Bly Manor's Carla Gugino (Mathilde) among its members.

Meanwhile, Ralph Ineson (Everybody's Talking About Jamie) plays ruthless crime lord Jim McAlester, while Billions star Paul Giamatti portrays underling, Nathan.

The supporting cast includes Ed Birch (The Singapore Grip), Michael Smiley (The Lobster), Adam Nagaitis (Chernobyl), Samuel Anderson (Doctor Who), Ivan Kaye (Vikings) and Joanna Bobin (Bridgerton).

Gunpowder Milkshake trailer

A trailer for Gunpowder Milkshake landed on the internet in May 2021, teasing John Wick-esque action sequences as Karen Gillan pummels henchmen in a bowling alley and Carla Gugino fires a machine gun through the roof of a camper van. Watch below.

In August 2021, Sky Cinema released its own 90 second teaser to promote Gunpowder Milkshake's imminent UK release, giving viewers another look at what's in store.

As Netflix are responsible for releasing Gunpowder Milkshake internationally, the streaming service has also been promoting the neon-lit action flick, releasing a clip as part of its Geeked Week celebration.

What is Gunpowder Milkshake about?

Gunpowder Milkshake stars Karen Gillan as Sam, a woman who was abandoned by her assassin mother (Lena Headey) as a child and raised by The Firm, a ruthless crime syndicate, to also become a hit-woman.

Following in her mother's footsteps, Sam is sent to clean up one of The Firm's most dangerous messes but when the high-risk job goes wrong, she has to decide between doing her job and saving the life of Emily (Chloe Coleman) – an innocent 8-year-old girl.

Gunpowder Milkshake

"With a target on her back, Sam has only one chance to survive: Reunite with her mother and her lethal associates, The Librarians (Michelle Yeoh, Angela Bassett and Carla Gugino)," Netflix teases. "These three generations of women must now learn to trust each other, stand up to The Firm and their army of henchmen, and raise hell against those who could take everything from them."


Gunpowder Milkshake is released in UK cinemas on Friday 17th September. Looking for something else to watch? Check out our TV Guide or visit our dedicated Movies hub for the latest film news.