Having entered Earth-1 at the end of last weeks episode, were reintroduced to Harrison Wells here. Whats just ever-so creepy is that hes casually and eerily just lurking in the shadows at S.T.A.R. Labs. None of our familiar faces see him, but hes just there. Whats he doing and whats his purpose? Who knows. Of course, Wells would rear his head later on over at Mercury Labs, where he channelled his inner cat burglar.