Train to Busan

The Romero template moved onto a KTX train: a sealed space that cannot be left, the carriages falling one by one standing in for the farmhouse rooms, and the passengers who lock a door against other passengers doing the film's real damage. The class reading is Romero's too. His survivors turn on each other along the lines society already drew; Yeon's do it along money, and the businessman who has spent the film protecting his own is given the ending that implies. Filed MEDIUM: this is inheritance through a genre rather than a stated debt.

The sprinting infected is 28 Days Later's invention and Train to Busan runs on it entirely: a crowd that converts in seconds, so distance stops being safety and every carriage door becomes the plot. Yeon Sang-ho's additions are his own, a commuter train as the confined space and a fund manager who has to stop optimising, but the creature and its speed come from Boyle.