1903. On the edge of Niagara Falls, something is wrong at Nikola TeslaÔÇÖs generator plant. Who or what is sabotaging the maverick inventorÔÇÖs work? Has he really received a message from Mars? And where does his great rival Thomas Edison fit into these events? The Doctor, Yaz, Ryan and Graham must join forces with one of historyÔÇÖs great minds to save both him and planet Earth.
