Here's what we now know, based on the teaser: It's the Renaissance (yep, had that), science is big again, but the real truths? They "lie in the shadows ... written in blood." We're left to wonder if this is some sort of code. Do we need to do something involving shadows (we can handle that) and blood (no way!) in order to see the real teaser? Or, maybe, we simply resign ourselves to the fact we just got handed a heaping plate of letdown.