Fans of The Flash never know what to expect when it comes to Harrison Wells, and season 4 will take him on something of an emotional journey. Actor Tom Cavanagh has introduced viewers to a number of different takes on the Wells character, with different iterations of the brilliant scientist arriving from far-flung corners of the multiverse. That tradition will continue, with yet another version of Wells being introduced. But the new season will also feature the return of Earth-2's Harrison "Harry" Wells, and it sounds like his journey won't be an easy one.

In the first season, Cavanagh played the villain Eobard Thawne, who had murdered the real Earth-1 Wells and taken his place. Last year, he charmed Team Flash (and viewers) as misfit "H.R." Wells, a charismatic but intellectually limited visitor from Earth-19. His death in the third season finale paved the way for a new Wells to arrive this year, but Harry (introduced in the second season) is still rattling around looking for his purpose. His beloved speedster daughter Jesse is keeping Earth-3 safe, and Harry doesn't quite know what to do with himself on Earth-1.

Flash executive producer Andrew Kreisberg told EW that Harry will be in a bit of a holding pattern as season 4 begins:

Harrison Wells Jesse The Flash Season 3 Magenta

“He’s a genius, and his daughter is safe, and she’s The Flash on Earth-3, and he’s one of those people who’s realizing that he doesn’t have a life. So season 4 for Harry is really realizing what he’s missing in his life and what it is he needs to become a better, more complete person, and so he’s going to be going on a fairly epic emotional journey this season that is tied to The Thinker’s plan.”

The Thinker is a classic Flash villain who has been revealed to be the Big Bad of the new season. It's a departure for the show, which has focused on speedster villains like Reverse Flash, Zoom, and Savitar to date. The Thinker, as his name suggests, will be more of a cerebral challenge for Barry and friends. Given that, they'll be happy to have the brilliant Harry on their side, and it will be interesting to see him match wits when Cavanagh shares the screen with actor Neil Sandilands.

Harry Wells has arguably been Cavanagh's best take on the character to date, so it's good to know he'll be sticking around for a while. We've already seen Harry grow quite a bit from the acerbic, impatient, and single-minded man he was when he first arrived on the scene in the second season. Spending more time with Team Flash has softened him up and he has slowly become more of a mentor figure to them, much like Thawne's fake Wells once was.

Whatever emotional trials await Harry this year, there's no doubt that Cavanagh has the acting chops to handle them.

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The Flash season 4 premieres on Tuesday, October 10 @8pm on The CW.

Source: EW