Will finds a car in the swamp, and attached are two married ghosts and their remains. The search for their killer, who just might be an old acquaintance of theirs, begins with the help of Will and the Swamp Thing.

A lunatic escapes from a local asylum and knocks on Tressa's door late at night. He proclaims himself as an alien killer. Even the Swamp Thing is in danger.

Veteran actor Roscoe Lee Browne plays an "Ogun", a voodoo priest whom Arcane employs to destroy the Swamp Thing.

Dr. Arcane attempts once again to obtain the bio-restorative formula from the Swamp Thing. However, this time Arcane has a helper, and the Swamp Thing knows her as his late wife, Linda Holland.

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 the Swamp Thing to find him.

Arcane plots and murders the local district attorney when he swears to bring Arcane down. A high profile murder tied to Arcane would be hard to hide, unless someone nobody would suspect commits the crime. Somebody like...the Swamp Thing.

Tempers flare when Will's estranged father shows up looking for a rare white orchid that Arcane has paid him to steal. Will's trust is broken, and so is the swamp's when he leads his father to it unwittingly. Meanwhile, Arcane tests his poisonous mutant garden on Abigail.

A mysterious couple search the swamp for the legendary Fountain of Youth. Arcane learns about the couple's plans and tries to find the Fountain first, as Will is caught in the middle of the couple's debate on whether or not the Fountain even exists.

Arcane accidentally creates a half-plant/half-robot with evil intentions from a mutated garden. The results are deadly to the swamp.

Arcane has unleashed his latest mutant monster into the swamp to eat everything it sees and if this test trial works, then more will be released. To ensure that the Swamp Thing does not interfere, he takes a hostage and bargains for immunity.

Jim and Tressa may have to leave the swamp after a lawyer delivers a notice of eviction in the form of a will from Tressa's late mother. They are unaware that the lawyer is in league with Dr. Arcane. Meanwhile, Tressa's mother's spirit guides her to the swamp where the real answers lie.

Tressa and her friends are victims of another one of Arcane's experiments for General Sunderland. Tressa tries to save her friends when they suddenly disappear in the swamp right before her eyes.

When Arcane unleashes a genetic assassin into the swamp in the form of a virus, he gets more than he bargained for; he not only gets rid of the Swamp Thing, but he accidentally brings Alec Holland back.

Arcane finally resurrects his wife Tatania, only to learn the woman is an impostor. A few hours in the lab with this woman leads Arcane to discover the true whereabouts of his beloved wife and the identity of her captor; General Sunderland.

Arcane's protégé, whom he refers to as the "Crown Prince", is experimenting with hatred pheromones and his latest batch, which supposedly failed, is dumped in the swamp. The Swamp Thing has to intervene when Tressa is exposed and is in danger of being murdered - by everyone.

Arcane experiments on an innocent man by murdering him and trying to revive him with a serum, stolen from Alec Holland years ago. The man comes back to life again with severe side effects for anyone who touches him, even the Swamp Thing.

Still fruitlessly searching for her missing son Jim, Tressa is diverted when she hears the voice of her former boyfriend, a radio jockey from the 70's. Tressa begins a second hunt for answers, as she discovers what really happened when her boyfriend disappeared 18 years ago, guided by his voice from the grave.

The Swamp Thing's worst enemy is also the enemy of the swamp...himself.

A thief on the run from his female accomplice chooses the swamp as his hiding place for a fortune in stolen cash - and Jim's house as his final stop.

Jim is feeling lonely and tries to make a new friend when he meets a mysterious young girl in town, named Lily, who invites herself into Jim and Tressa‘s home, and who carries a dark secret.

One of Arcane's mutants arrives in the swamp to exact revenge on him. The Swamp Thing tries to make him understand how to live with what he is.

Tressa accidentally uncovers a pair of robots casing the swamp and the Kipp residence in search of any evidence of Dr. Woodrue's experiments. Abigail is on the run and the Watchers must deal with the Swamp Thing to get to her.

Graham leads a team of heavily armed mercenaries into the swamp to kill the Swamp Thing once and for all. Meanwhile, Tressa learns a few of the secrets of the swamp when she has a wounded visitor.

An old man has a deadly, infectious virus that only Alec's blood can cure. Arcane tries to exploit the disease for himself.

The Swamp Thing is overcome by toxic waste and falls unconscious where he is found by two men and is sold to a carnival freak show run by a cruel man in league with Arcane. Jim stumbles upon the carnival and tries to help the Swamp Thing before it is too late.