When does Supernatural return?

Supernatural is an American television series. It was first broadcast on September 13, 2005, on The WB, and subsequently became part of successor network The CW's lineup. Starring Jared Padalecki as Sam Winchester and Jensen Ackles as Dean Winchester, the series follows the two brothers as they hunt demons, ghosts, monsters and other supernatural beings. With its eleventh season, Supernatural became the longest-running American live-action fantasy TV series.