Overview: Russian spy ships secretly visit our coast. For days they lie quietly in our part of the North Sea above important data cables, gas pipelines and near wind farms. Is Russia preparing to sabotage our infrastructure at sea? Pointer follows the ships Admiral Vladimirsky and Yevgeny Gorigledzhan, ships that, according to Russia, only conduct seabed research. But their strange course and their involvement in a secret military program raise questions. What exactly are they doing there and is our infrastructure at sea really well protected?