The Flash
Iris (Candice Patton) worries about Wally's (Keiynan Lonsdale) safety in episode 12 of "The Flash" Season 2. The CW

In episode 11 of "The Flash" Season 2, Joe (Jesse Martin) told Barry (Grant Gustin) that, though he could do tremendous things as The Flash, he must be ready to let go of personal attachments to do the job. In episode 12, "Fast Lane," Barry is doing just that, putting aside Patty (Shantel VanSanten) and his personal life to focus on Zoom (Tony Todd).

According to the synopsis for episode 12, Barry teams up with Dr. Wells (Tom Cavanagh) to find a way to close the breaches between Earth 1 and Earth 2. Remember, the ongoing plan to stop Zoom requires closing all of the breaches except one, so that Barry and the STAR Labs team know exactly where the super villain will be entering Earth 1 when he comes for The Flash.

However, Barry and Wells are distracted in their endeavor by a new meta-human, Tar Pit (Marco Grazzini), who can transform into liquid asphalt.

"He's basically drowning people in tar," says Cisco (Carlos Valdes) in the episode's promo, before naming yet another meta-human foe. "He's like a walking ... Tar Pit."

Meanwhile, Iris (Candice Patton) is worried for Wally's (Keiynan Lonsdale) safety when she learns he is drag racing. The brother-sister pair had a moment in episode 11 when Wally asked Iris to come with him to visit their dying mother (Vanessa Williams). Now that the two are growing closer, Iris is only more concerned to hear about his reckless behavior. Can she convince him to stop?

Speaking of Iris, the promo for "Fast Lane" reveals that during a battle between Barry and either Tar Pit or Zoom — the sonic wave Barry faces in the teaser video suggests Zoom is paying a visit — a shard of glass flies into Iris' stomach! That is not good!

"I wasn't fast enough," the superhero laments. It seems keeping his personal life out of his fights is not so easy.

Watch the promo for "Fast Lane" below:

Will Barry and Wells be able to close the breaches? Plus, will Iris survive her injury? Fans will have to wait to find out. "The Flash" airs Tuesdays at 8 p.m. EST on the CW.