Driven to cure the worsening epidemic in Marais, when her friend and co-worker Harlan (recurring guest star LEONARDO NAM) is stricken with the “green flu,” Abby searches Alec’s lab for a cure, but instead finds the latest supernatural reanimation from the Rot. Although Swamp Thing uses his strange new powers to intervene, he’s more desperate than ever to find his humanity. Meanwhile, Avery Sunderland is facing increasing pressure from financial sources and Sheriff Cable who questions him about the death of Alec Holland.
Guest stars in the episode include Elle Graham as Susie Coyle, Leonardo Nam as Harlan Edwards, Selena Anduze as Caroline Woodrue, Given Sharp as Shawna Sutherland, Mich Fitzgerald as Munson, Tim Russ as Dr. Rob Chowodury, Al Mitchell as Delroy Tremayne, and Al Vicente as Dr. Troost. The new promotional photos can be found below.