Caleb was a government-sanctioned killer who went dark by choice, trading in whatever future the agency might have offered for the functional anonymity of a life underground. He would have stayed that way. The film’s premise turns on that might-have: Banshee, the operative Caleb trained, surfaces with news that a bounty has been placed on his head — and neither of them can treat that as someone else’s problem.

Jon Keeyes directs with the practical efficiency that marks his best work in the genre: clean sight lines, action mechanics that communicate what is happening without demanding spectacle, and a production that trusts its cast enough not to over-explain the dynamic. Antonio Banderas brings the particular quality he has in this register — unhurried, just slightly self-amused — while Jaime King takes the structurally more demanding role. Banshee is not Caleb’s assistant; she runs her own story alongside his, with a revenge thread that predates the film’s central complication.

Tommy Flanagan completes the principal triangle as an antagonist whose menace stays calibrated. The film does not overcomplicate the threat — the right call when the premise is already asking its leads to carry two parallel emotional economies at the same time.

What Code Name Banshee understands is economy. The premise does not reach for myth-building or franchise logic. Caleb is a man who made a deliberate choice, and the film respects that: his underground life is not sentimental, it is functional. That restraint gives Banderas space to work without the film requiring him to perform a kind of action-movie nostalgia.

Keeyes shoots within his means, and the film is better for it. The action choreography prioritizes clarity over sensation, the score does its job without announcing itself, and the performances keep the tension credible even when the plot leans on coincidence. There is a modest directness to Code Name Banshee that the genre — awash in inflated stakes — occasionally needs.

Whether it breaks through the streaming catalog noise is a different question. As a lean, unpretentious action thriller that actually works its premise, it earns its runtime.