The original movie followed a TV reporter, her camera man and the fire brigade to a seemingly ordinary emergency call at an apartment block where they were plunged in to a terrifying and sustained attack by infected, zombie-like residents.
The sequel follows immediately after the events of the previous film as an armed SWAT team are sent in to assess and neutralise the situation at the now-quarantined Barcelona building.
Once again, unnerving PoV video perspective captures the gruesome action as the soldiers attempt to keep the bloodthirsty menace at bay - and prevent the infection from spreading to the outside world.
Starring Jonathan Mellor, Manuela Velasco and Óscar Sanchez Zafra.
In Spanish with English subtitles.
(2009) Cert: 18