1x13 - Swamp Thing

Arcane captures Jim and sells him into slavery after the boy is witness to the evil doctor's hideous transformations of men into monsters and the local sheriff is in on the plans. Jim’s 17-year-old half-brother, Will, arrives to investigate Jim’s disappearance and teams up with Swamp Thing to find Arcane’s secret lab, but neither are aware that Jim is already gone from the country and the sheriff is one step head of their moves.