Assassin (2023) Review: A Mind-Swap Thriller Short On Spark

This Assassin review starts with a simple question: can a sharp sci-fi hook rescue a small-budget action film? The 2023 thriller from director Jesse Atlas pairs a body-swap gimmick with a revenge story and a cast led by Bruce Willis. The result is watchable in places, but it never fully uses its best idea.

Assassin Review: The Story So Far (No Spoilers)

The Assassin plot rests on a piece of invented technology. A private military operation builds a microchip that lets one agent's mind inhabit another person's body, so missions can be carried out under a stranger's face. The tagline puts it bluntly: every body is a weapon.

Things go wrong when an agent is killed during a secret assignment. His wife, Alexa, decides to take his place inside the program and hunt down the man who is responsible. That is the whole setup, and it is a clean one for an 88-minute action drama.

A note on the source material: some descriptions online place this story in 1930s Shanghai with a resistance leader and a gangster. That does not match the film's listed details, so this review sticks to the body-swap premise.

What Works in Assassin

The core concept is the film's best asset. Minds jumping between bodies gives the action-thriller a nice hook, and it raises fun questions about identity, grief and who you can trust when anyone might be someone else.

The short runtime also helps. At 88 minutes, the film moves along without much padding. If you like your genre fare lean, it is easy to get through in one sitting.

One viewer even called it "better than IMDB made it out to be," praising how the film was assembled around Willis's limitations. That is a fair point: the editing does its best to present him in the most flattering way possible.

• A clear, high-concept premise

• A brisk pace with no filler

• A revenge angle driven by a personal loss

Assassin Cast and Performances

The Assassin cast is led on paper by Bruce Willis as Valmora, though this is a film where his presence is felt more through the marketing than the screen time. Fans will want to know that his role is arranged to suit his situation, and the film treats him with care.

Nomzamo Mbatha carries the emotional weight as Alexa, the widow who takes on the program. She gives the grief and determination a steady, believable footing, even when the script gives her familiar lines. Dominic Purcell appears as Adrien, and the supporting group includes Andy Allo as Mali, Mustafa Shakir as Sebastian and Fernanda Andrade as Olivia.

Nobody here is asked to stretch much, but the ensemble keeps the film grounded. The performances are more solid than the material around them.

Where Assassin Stumbles

The biggest problem is how little the film does with its own gimmick. A story about minds hopping into new bodies should feel inventive, tense and a bit playful. Here the idea often feels like a plot device rather than a source of surprise.

The budget shows, too. Action scenes in this kind of thriller need punch and clarity, and this one is more functional than thrilling. Audience reaction reflects that: the film sits at a middling 5.1 out of 10 on TMDB from about 99 votes.

The drama also rarely goes beyond the basics. Grief and revenge are the engine, yet the film moves past them quickly. It is worth a look for the concept, but you may wish for more depth.

Is Assassin Worth Watching?

Assassin is worth watching if you are curious and keep your expectations modest. It is a middle-of-the-road action film with a good idea, a committed lead in Mbatha and a quick running time.

If you want sharp world-building or standout set pieces, you will probably be underwhelmed. Think of it as a rainy-night rental rather than a must-see. For more in this vein, browse our action movie reviews or our drama movie reviews.

If you prefer a more emotional take on a parent on a mission, our Protector (2026) review covers a film built around a mother's rescue.

Who Will Enjoy Assassin

• Fans of Bruce Willis who want to see him in one of his later action roles

• Viewers who like sci-fi action concepts and don't mind a low-budget finish

• Anyone after a short, simple revenge thriller for a quiet evening