[SPOILERS for those not caught up on The Flash ahead.]

Green Arrow has to occasionally combat magic, Kara regularly fights aliens on Supergirl, and Legends of Tomorrow is by nature all about time travel, but the weirdest adventures of the Arrowverse are generally saved for The Flash. Part of that is the sheer breadth of sci-fi and comic book territory the show covers. The entire series is based on a proliferation of people with extraordinary powers, opening up the door for a number of flights of fancy. One such deviation will see Barry team up with Kara in a 1940s-set musical episode as the two battle the Music Meister.

Meanwhile, Barry’s ever-expanding power-set lets him regularly travel through time and hop to parallel Earths. In fact, he’s not even the only character on the show who can visit other locations in the Multiverse, which has led to a number of twists on the status quo of the series. And all of that isn’t even touching on the Speed Force. In simple terms, it’s what grants speedsters their powers. It’s also a living entity, however, something Barry learned last season when he spoke to it. On top of that, it’s a physical location that can be accessed, and Barry’s dispatching of Savitar into it is coming back to bite him.

The CW has just released a promo for next week’s ‘Into the Speed Force’, which will see Barry travel to the source of his powers in an effort to rescue Wally from his imprisonment by Savitar. You can check out the trailer up top, which looks to be the trippiest episode of The Flash yet. Not only will Barry have to navigate the bizarre labyrinth that is the Speed Force and find Wally, but we’ve got a feeling Savitar is a lot more comfortable operating there than our hero. What’s more, Barry will have to face down a number of ghosts from his past, and they don’t look happy.

Wentworth Miller as Captain Cold Flash ‘Into the Speed Force’ Promo: Ronnie Raymond & Captain Cold Return

In the clip, we see the return of Captain Cold, who’s popped up across The Flash and Legends in various forms since his death last year. Barry will also face Ronnie Raymond and Eddie Thawne, who are both likely to blame Barry for their deaths. While he’s hardly responsible, we’re guessing these will be more reflections of his psyche and guilt – and given this is the Arrowverse, there’s likely to be plenty of self-flaggelation. Barry also gets attacked by a Time Wraith, who could be a vision of the past hunting him, given how often he messes with time.

On top of that, we see Caitlin with a baby, the return of Jay Garrick, and a black glove around Barry’s throat. The last part could very well be the Black Flash, which Zoom became after his defeat by Barry. All in all, it looks to be a thrilling and mind-bending episode sure to reward longtime viewers. Hopefully, this will all just set up the actual return of many of these characters, as they’ve all been sorely missed.

NEXT: Is DC’s Rebirth Coming to The Flash TV Show?

The Flash season 3 continues next week with ‘Into the Speed Force’ @ 8 pm on The CW.

Source: The CW

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