Swamp Thing: The Series Season 1 Episode 22

Tressa and Abigail are taken hostage by a man with a score to settle with Arcane, and whom has developed an environment destroying weapon called the Prometheus Parabola, capable of destroying the swamp and Swamp Thing intervenes in the literal shoot-out war at Tressa’s house to see that both sides do not activate the weapon while Will tries to rescue Tressa, Abigail, and Dr. Hollister from harms way.