The fourth season of the Canadian science fiction–fantasy television series Sanctuary was commissioned by Syfy on January 2010.
4 - 1Tempus Oct. 07, 2011
4 - 2Uprising Oct. 14, 2011
4 - 3Untouchable Oct. 21, 2011
4 - 4Monsoon Oct. 28, 2011
4 - 5Resistance Nov. 04, 2011
4 - 6Homecoming Nov. 11, 2011
4 - 7Icebreaker Nov. 18, 2011
4 - 8Fugue Nov. 25, 2011
4 - 9Chimera Nov. 29, 2011
4 - 10Acolyte Dec. 09, 2011
4 - 11The Depths Dec. 16, 2011
4 - 12Sanctuary for None (1) Dec. 23, 2011
4 - 13Sanctuary for None (2) Dec. 30, 2011