Hawaii Five-0's favorite arsonist is back in town.

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You can lock him up (twice), but Jason Duclair (Randy Couture) will always find a way to cause a little mayhem. Even he knows he needs to be behind bars, and he's more than willing to admit it. Nevertheless, the murderous villain will return to Hawaii Five-0 this April. McGarrett's (Alex O'Loughlin) team should watch their backs - Duclaire won't be alone.

The firebug made his debut in season 5's "Nanahu (Embers)," at which time he moved his fiery reign of terror from California to Oahu (see video below). Season 6 reintroduced the character in "Lehu a Lehu (Ashes to Ashes)" when a copycat ultimately tricks Five-0 into breaking Duclair out for a deadly meet up.

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The reasons for Duclair's return are unknown, but it's looks like he and three escapee pals will have their minds set on murder.

Hawaii Five-0 is currently on a brief hiatus, but viewers can head back to paradise on March 11 with "Waiwai (Assets)."

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