The march toward Bruce Wayne's inevitable future was mapped gradually in Gotham, but toward the end of Season 1 it was given an accelerated kick. Season 2 will commence with Alfred (Sean Pertwee) and the young Master Wayne stumbling upon Bruce's father's secret, which exists at the end of a cold, stony tunnel. The extent of what's down there is unknown, but thanks to a video courtesy of the cast, it's all but confirmed to be the Batcave. https://www.youtube.com/watch?t=70&v=q5eq7QXpm1Y The cave itself will likely be a series centre-piece, as Bruce and Alfred attempt to riddle clues from its contents, and set Bruce on the road to calling it home.