Wo Fat and Ian Wright are back on Hawaii Five-0, but will the series be able to handle both villains at once?

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The CBS drama is bringing in both of this season's main baddies for their season finale, and it looks like Steve McGarrett (Alex O'Loughlin) and Co. are going to have their hands full during "O ka Pili 'Ohana ka 'Oi (Family Comes First)."

McGarrett and Captain Lou Grover (Chi McBride) have learned to rely on each other since Ian's (Nick Jonas) first Hawaiian misadventure (see video below) and Grover will need to dig into the Navy SEAL's back of unconventional tricks when the young terrorist kidnaps his daughter.

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"[Grover] starts off the season looking at what McGarrett's doing as being unorthodox, and it's everything he hates in a cop," said executive producer Peter M. Lenkov, according to TV Guide. "Now, Grover's put into a situation where he's got to act the same way. I think he sort of learns a lot about himself and gains a new respect for McGarrett."

Meanwhile, McGarrett's dogged purist of his mother and her CIA secrets may pay off when the heavily scared Wo Fat (Mark Dacascos) makes a break from prison and heads back to the Pacific locale.

"The end is going to be a big shocker," Lenkov teased TV Guide. "And I don't think anybody is going to see it coming."

Hawaii Five-0 airs Fridays at 9 p.m. ET on CBS.