I Run the Last Dorm on Earth - Episode 13

The episode opens after survivors discover John, their regular supplier, might actually be a zombie disguised as him. The camp splits: some insist that despite real supplies they must kill zombies—"Kill him!"—while others, including a girl who remembers his help, plead for mercy. Tension escalates when blood appears and a child screams, "Dad, so much blood! Run!" Someone urges John and Fiona to flee, but others push for violence and even hope Carson will profit if two adults die. The episode ends with John surrounded and his fate hanging as the group closes in.