The comics

The rec franchise not only has movies, it also has comics.

A comic book compilation was released in 2012 to accompany the release of REC 3, titled REC: Historias Ineditas. The book presents five different story arcs set in the REC series, illustrated by five different artists.
 * 1) The first, ENCERRADOS (Trapped) follows the Teenagers trapped in the Apartment, following Tito's possession. They're released and taunted by Tito. Before they can escape however, they are shot down by a new group of GEO's who have come to rescue Angela.
 * 2) The second TRISTANA, provides the backstory for Tristana Medeiros, who becomes the possessed after being raped.
 * 3) The Third, ZOOMBII, deals with an infected man making his way to a Zoo, where he infects the animals.
 * 4) The fourth titled EL EXPERIMENTO (The Experiment), follows the priest, Padre Albelda, (the dead priest from the second film and the man heard on the voice recording at the end of the first installment) attempting to end the Medeiros Girl's life in the apartment.
 * 5) The Final Arc follows the Infected Uncle from the third film and reveals what happened to Max (the infected dog from the first film).