WTTW split the story into two episodes, with the break occuring during episode four when the Doctor points out to Hart that the submarine signal is heading towards the beach near the prison. [source: ChicagoEpguides]

Intro: Smart as a fox. Wise as an owl. Nobody ever gives lizards any credit for intelligence. But they will, and soon.

Outro: Guards on one side, a mine field on a second, a Sea Devil on the third, and the ocean on the fourth. If a dilemma is a choice between two bad options, I would call the situation The Doctor and Jo are in a quadralemma. And by next week it may evolve into an octolemma. So join us next Sunday at 11 for the conclusion of "The Sea Devils" and find out just how many bad options The Doctor and Jo must choose from. [source: ChicagoEpguides]