Mass murderer Dr. Rubin Zellar is unwittingly taken aboard the seaQuest. Placing him in custody, Zellar is able to escape and informs Bridger that he's hidden a toxin frozen in ice somewhere aboard the ship...a toxin that is surely melting with each passing second.

original airdate--October 3,1993

"The 21st Century...Mankind has colonized the last unexplored region on Earth...

The Oceans.

As Captain of the seaQuest and her crew, we are it's guardians...For beneath the surface ...

Lies the Future."