Captain Scarlet and the Mysterons S01E06 - White as Snow

When a radio station relay and communications satellite is recreated by the Mysterons and its course altered towards Cloudbase, Colonel White orders it to be destroyed before it collides with the aerial base.
Infuriated at his superior for disregarding the lives of the men on-board the satellite, Scarlet declines the opportunity to be the temporary commander-in-chief of Cloudbase, and therefore, the offer is handed to the honoured Captain Blue.
Leaving for a surreptitious destination, which only White has told to Lieutenant Green about, and with harsh instructions not to publish it to anyone at all, he arrives on board the USS Panther II submarine, with the alias Robert Snow, where shortly after one of the ensign officers is, with intent, murdered and reconstructed by the Mysterons in their newest play of vengeance to kill Colonel White.