Grant Gustin as The Flash and Keiynan Lonsdale as Kid Flash
Barry (Grant Gustin) finds out that Savitar (voiced by Tobin Bell) is messing with Wally’s (Keiynan Lonsdale) head in Season 3, episode 15 of “The Flash.” The CW

Savitar (voiced by Tobin Bell) gets out of the Speed Force in next week’s episode of “The Flash.”

While it remains to be seen how exactly Savitar manages to free himself from the Speed Force, the trailer for Season 3, episode 15 shows the god of speed messing with Wally’s (Keiynan Lonsdale) head.

At the end of Season 3, episode 14, Wally saw a vision of Savitar while he’s on his way to Big Belly Burger. Apparently, Wally continues to have similar visions in the upcoming episode, but according to the synopsis for the installment, Kid Flash decides to hide them from the team.

Barry (Grant Gustin), however, eventually finds out that Savitar is trying to brainwash Wally. So in an attempt to calm the young speedster’s nerves, Barry explains to him that the visions he sees are not true. That, however, doesn’t really help as it appears that Savitar successfully uses Wally’s weakness to get out of the Speed Force.

As seen in the preview clip, Wally sees a vision of his late mom, Francine (Vanessa Williams). Perhaps Savitar gets advantage of Wally’s longing for his mom to retrieve the Philosopher’s Stone from the Speed Force and ultimately free him from being trapped.

Savitar has used this tricked on Cisco (Carlos Valdes) in Season 3 episode 9, in which the viber saw a vision of his late brother Dante (Nicholas Gonzalez), who persuaded him to open the box containing the Philosopher’s Stone. When Cisco opened the box, Savitar popped up in S.T.A.R. Labs and fought Barry and Wally. Fortunately, Caitlin (Danielle Panabaker) managed to convince Cisco to close the box again before Savitar had the chance to kill both speedsters.

Also in next week’s episode, a dangerous secret threatens Barry and Iris’ (Candice Patton) happiness.

“The Flash” Season 3, episode 15, titled “The Wrath of Savitar,” airs on Tuesday, March 7 at 8 p.m. EST on The CW.