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: In short order the Sea Devils will be summoned by The Master, setting in motion an incredible chain of events which will test The Doctor's ability, his talent, and his ingenuity. Stay tuned now for the conclusion of "The Sea Devils."

Outro: Next week, the Time Lords send The Doctor and Jo to the planet Solos to deliver a mysterious message to an unknown party. Be with us next Sunday evening at 11 for the astonishing meeting of Doctor Who and "The Mutants." [source: ChicagoEpguides]