The Iron Shore

Landing on the troubled, sea-faring planet Mercator, the Doctor and Jo encounter Callis, a 'cursed man', the last surviving member of his family line - and the curse is keen to find new victims.

Nearby, a condemned wet dock, a deep rectangle of unmoving water, is the source of mystifying rumours. As Jo lifts the lid on the tensions within the local community, the Doctor finds himself in deep trouble.