'The Flash' season 3 episode 15 spoilers: Savitar returns by using Wally; will Iris say 'yes' to Barry's marriage proposal?

Wally (Keiynan Lonsdale) will get visions of Savitar, which turns out to be villainous speedster's way of returning to Earth-One. Meanwhile, Iris (Candice Patton) has yet to give an answer to Barry's (Grant Gustin) marriage proposal.

On the next episode of "The Flash" season 3, titled "The Wrath of Savitar," the Hindu god of motion will be visiting Wally in the form of dreams and visions.

"While training with Barry, Wally starts to have visions of Savitar, which he hides from the team. A dangerous secret threatens Barry and Iris' happiness," a listing from The Futon Critic reads.

However, Barry will soon find out about Wally's visions of Savitar as the Scarlet Speedster is seen in the episode 15 promo, asking the team at STAR Labs, "How do we know he's not spying on us through Wally right now?"

However, it appears that Barry will be wrong about Wally's visions. Savitar wasn't spying on them, he was simply finding his way back to Earth-One as he exits from a portal right in front of Barry's eyes.

"I have what I need to escape my hell," Savitar tells Wally through a vision.

Meanwhile, Barry proposed to Iris in the previous episode of "The Flash" season 3, titled "Attack on Central City." However, Iris hasn't given him an answer yet.

Although Barry and Iris are happy now, the looming threat of Iris' death by Savitar's hands still awaits them, which might give Iris a reason to say no.

Barry and Wally are working on a plan on how to beat Savitar, but according to executive producer Aaron Helbing, the Hindu god of motion has a plan of his own.

"I would say that Savitar has a plan. Since Savitar was kind of tethered to the Philosopher's Stone, he sent Barry to a time that he needed him to go to," Helbing shared with TVLine.

"The Flash" season 3 airs every Tuesday night at 8 p.m. ET on The CW.