I saw a "best genre film about to leave" alert for something on Netflix, so when I had a chance to watch it, I did. 

Train to Busan did not disappoint. It's a zombie thriller with the twist that as the outbreak is happening, a number of people on a cross-country train are experiencing both the external and internal outbreaks.

Maybe some spoilers follow. It's much as you expect, and I won't break down any real twists or reveal any secrets.

The movie starts out with a very busy dad, who's trying to get his daughter back to her mother, who is divorced and lives in another town. Rather than allow the child to take the train by herself, he breaks away from his very busy job to accompany her.

While they're on the train, the news on everyone's phone and the train's televisions start sharing the scattered, confused, and much wrong, early news of the outbreak; first seen as a protest gone wrong, that kind of thing. The people in the train feel safe, but are concerned for their off-train loved ones, and their own safety when disembarking.

During this, a woman who had been infected prior to boarding turns and begins attacking other passengers. There are cars of quick-thinkers on both sides who trap the zombies in the cars between them. The train makes a few stops, with escalating incidents.

Of course, much zombie mayhem ensues. The gore is fairly low-key, while the zombies are fantastically designed and executed. The commitment and gymnastics performed by the crowds who turn is exemplary.

Although the movie is subtitled, and not dubbed, it was a good time. The story is convincing and well-executed. The dialogue leaves moments, and at times makes unfortunate but necessary shifts. The characters vacillate between calm and frantic, sometimes without cause. The action is jammed with plausible and improbable.

It's a zombie movie, and it's a pretty good one.