Stargate SG-1: 2x13
Spirits
SG-1 finds a planet inhabited by Native American Indians, protected by spirits who are actually advanced alien shapeshifters.
2 - 1The Serpent's Lair Jun. 26, 1998
2 - 2In the Line of Duty Jul. 03, 1998
2 - 3Prisoners Jul. 10, 1998
2 - 4The Gamekeeper Jul. 17, 1998
2 - 5Need Jul. 24, 1998
2 - 6Thor's Chariot Jul. 31, 1998
2 - 7Message in a Bottle Aug. 07, 1998
2 - 8Family Aug. 14, 1998
2 - 9Secrets Aug. 21, 1998
2 - 10Bane Sep. 25, 1998
2 - 11The Tok'ra (1) Oct. 02, 1998
2 - 12The Tok'ra (2) Oct. 09, 1998
2 - 13Spirits Oct. 23, 1998
2 - 14Touchstone Oct. 30, 1998
2 - 15The Fifth Race Jan. 22, 1999
2 - 16A Matter of Time Jan. 29, 1999
2 - 17Holiday Feb. 05, 1999
2 - 18Serpent's Song Feb. 12, 1999
2 - 19One False Step Feb. 19, 1999
2 - 20Show and Tell Feb. 26, 1999
2 - 211969 Mar. 05, 1999
2 - 22Out of Mind (1) Mar. 12, 1999