Dr Who - 125 - Snake Dance - Synopsis
Dr Who - Peter Davidson - Series 20 - ep 2 - tep 125
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The evil Mara that possessed Tegan (in Kinda) controls her once again, diverting the TARDIS to the planet Manussa, original home of the Mara before it was banished into the outer darkness centuries ago. There, it steals the Great Crystal and tries to use it to cross back into the physical world! Can the Doctor save Tegan and defeat the Mara once again?