As revealed in last week's "Jaws"-style promo, there's something dangerous in the waters of Central City. King Shark, who made a brief appearance earlier in "Flash's" second season, will return in full force in tonight's episode of the CW series. King Shark's such a big problem that he even warrants a mini-crossover with fellow CW superhero show "Arrow," as Diggle and Lyla will make the trek from Star City to give Team Flash a head's up. In this clip from tonight's episode, we see how King Shark makes his grand -- and grisly --escape.

The CW has also released an inside look at the episode, which also reveals more of how "The Flash" will address last week's deadly cliffhanger in tonight's episode.

When King Shark escapes from an A.R.G.U.S. holding tank, Lila (guest star Audrey Marie Anderson) and Diggle (David Ramsey) travel to Central City to warn The Flash (Grant Gustin). King Shark shows up at the West house and attacks Joe (Jesse L. Martin), Iris (Candice Patton), Wally (Keiynan Lonsdale) and Barry. Hanelle Culpepper directed the episode written by Benjamin Raab & Deric A. Hughes (#215)

"The Flash" airs Tuesdays at 8/7c on The CW.