Stargate Atlantis: The Kindness of Strangers (SGA2.2)

"Illness I can handle - the bloody volcanoes, that's what I'm worried about!"

Dr Beckett and the Atlantis team embark on a mercy mission to save a community from an imminent volcanic eruption. Once infamous for harbouring a terrible disease, the small community has been ostracised, though they swear they are now free from sickness. But as the evacuation begins, it seems that the people may have been hiding a horrifying truth...