After six weeks of build up, The Flash properly introduces Season 4's Big Bad, with a much greater attention to detail than this show normally affords its main villains.
The subtle differences between Harrison and Harry Wells are fascinating, and really speak to Tom Cavanagh's acting prowess, and getting a calculating villain is such a nice change of pace.
I would hope that the writers can figure out a way to better integrate [Thinker's] cheerless persona into what has generally been a fun season, but there's ample reason to be skeptical about that happening.
One of the most refreshing episodes of the last two seasons. The show finally has a villain who will provide Flash with a different challenge beyond Barry running faster.
