The Strain 4×09 Promo “The Traitor” Season 4 Episode 9 Promo

The Strain 4×09 “The Traitor” Season 4 Episode 9 Promo – An unexpected guest brings old conflicts to the surface, dividing our heroes, threatening the group’s trust. With questionable new intel in hand, they launch a make‐or‐break final assault on the Master. Written by David Weddle & Bradley Thompson; directed by Jennifer Lynch.