‘Swamp Thing’ — Photos 1 of 5 ‘Swamp Thing’ — Photos The CW ‘Swamp Thing’ is a series that originally premiered on DC Universe in 2019. The show is being reaired on The CW starting Oct. 6. The show is set in Marais, Louisiana. When a mysterious illness strikes the town, CDC investigator (and former Marais native) Dr. Abby Arcane (Crystal Reed) is sent to investigate. At the hospital, she encounters biologist Alec Holland (Andy Bean) who believes the bizarre illness might be connected to his scientific work in the swamp for powerful businessman Avery Sunderland (Will Patton). When Alec goes missing after investigating the unnatural experiments deep in the swamp, something else rises in his place: Swamp Thing (Derek Mears), a mysterious creature born of the depths of the swamp’s mystical and terrifying secrets. The series also stars Virginia Madsen as Maria Sunderland, Henderson Wade as Matt Cable, Maria Sten as Liz Tremayne, Jeryl Prescott as Madame Xanadu, with Jennifer Beals as Sheriff Lucilia Cable. October 6, 2020, 6:18PM 2 of 5 Andy Bean The CW Andy Bean stars as Alec Holland. Alex is a biologist who becomes Swamp Thing. October 6, 2020, 6:18PM 3 of 5 Crystal Reed The CW Crystal Reed stars as Dr. Abby Arcane. Abby is a CDC doctor who returns to Marais. October 6, 2020, 6:18PM 4 of 5 Maria Sten The CW Maria Sten plays Liz Tremayne. Liz is a local reporter and bartender in Marais. October 6, 2020, 6:18PM 5 of 5 Ian Ziering The CW Ian Ziering stars as Daniel Cassidy. Daniel is also the Blue Devil! October 6, 2020, 6:18PM Click to Subscribe to Get Our Free HollywoodLife Daily Newsletter to get the hottest celeb news.