Sci-Fi Channel airs the 28th episode of Stargate Atlantis. 
Rushed back to Atlantis’ infirmary, Sheppard’s injuries sustained in the search for Ellia baffle Dr. Beckett; a significant arm wound heals remarkably fast, and Sheppard’s physical stamina increases to an unusual degree. Beckett’s blood work reveals that the retrovirus intended to transform Ellia back into a human seeped into Sheppard’s bloodstream during the fight, and the results could be unpredictable. Dr. Weir removes Sheppard from offworld duty and Beckett orders him to check in frequently, but symptoms appear quickly, and Sheppard begins mutating into something resembling half-human and half-Wraith. As his condition grows worse, Beckett discovers that Sheppard may be able to help himself find the cure – providing he’s still human enough.
teleplay by Robert C. Cooper & Martin Gero
story by Martin Gero
directed by Brad Turner
music by Joel GoldsmithCast: Joe Flanigan (Major John Sheppard), Torri Higginson (Dr. Elizabeth Weir), David Hewlett (Dr. Rodney McKay), Rachel Luttrell (Teyla), Jason Momoa (Ronon Dex), Kavan Smith (Major Lorne), Mitch Pileggi (Colonel Caldwell), Matthew Harrison (Scientist), Lindsay Collins (Scientist), Todd Hann (Bravo Leader), France Perras (Nurse), Andy Nez (Soldier)
LogBook entry by Earl Green