Professor Brian Tessler was running invisibility experiments on board the USS Eldridge in September 1943. He and Bosun got caught in a interdimensional temporal flux on board the ship. The Sixth Doctor told him about the green rust. They were all transported to the planet Capron in the TARDIS. Tessler was going to betray the Earth by giving Presidenta Osloo the secret of the Philadelphia Experiment. He was later shot by Osloo while pleading to be sent back home. (AUDIO: The Macros)
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