Booze Traveler (2014)

S11E2 Form and Void

Dean assists Jenna, the deputy he encountered after the Darkness emerged, in returning home safely before heading off to aid Sam with a town plagued by a lethal, enigmatic gas. Just as things seem to settle, Jenna finds herself in peril and reaches out to Dean for assistance. Sam advises Dean to return to her side, but he soon discovers that confronting the transformed townspeople is far more challenging than he anticipated.