Spartakus and the Sun Beneath the Sea

The Triangle of the Deep (2x15)

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The travelers investigate the stratum where the People of the Deep mysteriously vanished long ago. To help Tehrig stay on course in this area, which has magnetic disturbances, they create a fake competitor to FIPIRATE, tricking the pirates into increasing their broadcast signal strength. Of course it also causes the pirates to put on a huge impromptu concert for all the rogues of the strata.