Next week "The Flash" will air its mid-season winter finale -- an episode titled "The Present." This new promo, released by the CW following last night's crossover episode, shows Savitar and Alchemy taunting Barry and threatening to take away everything that he loves. To stop the "God of Speed," Barry will travel to Earth-3 to recruit the help of fellow speedster Jay Garrick.

RELATED: The Flash: Mark Hamill & John Wesley Shipp Return in New Photos

Mark Hamill and John Wesley Shipp will guest star, reprising their roles from the original "Flash" series as Earth-3's Flash and Trickster. You can check out photos from the episode, including shots of Hamill and Shipp, right here.

BARRY SEEKS HELP FROM JAY GARRICK — With Alchemy and Savitar still looming threats, Barry (Grant Gustin) is unable to focus on the Christmas holiday, and especially his relationship with Iris (Candice Patton). Determined to stop Savitar, Barry goes to Earth-3 to get advice from Jay Garrick (guest star John Wesley Shipp). Wally (Keiynan Lonsdale) wants to help Barry fight Savitar and reveals that he’s been training with H.R. (Tom Cavanagh), which doesn’t go over well with Barry. As Cisco (Carlos Valdes) faces his first Christmas without his brother Dante (guest star Nicholas Gonzalez), old wounds are reopened. Rachel Talalay directed the episode with story by Aaron Helbing & Todd Helbing and teleplay by Lauren Certo (#309). Original airdate 12/6/2016.

Starring Grant Gustin as the Scarlet Speedster, “The Flash” airs Tuesdays at 8 pm ET/PT on The CW. The series also stars Jesse L. Martin, Tom Cavanagh, Carlos Valdes, Candice Patton, Danielle Panabaker, Keiynan Lonsdale and more.