"Agent Zeta" is a mixed bag. On the upside decent action, an interesting back story, characters with depth and plausible motivations. On the downside, political bias (ETA were an understandable response to a complex political landscape in Spain not helped by at times oppressive governance), a story that's a little incoherent and can unsurprisingly be difficult to follow, plus inconsistent pacing. In summary, a moderately watchable action thriller from Spain but not without shortcomings.