'Hawaii Five-0' Season 6: Frightening Arsonist Returns, Episode 2 Plot Revealed [VIDEO]
Hawaii Five-0 will bring back a terrifying criminal as season 6 begins.
MMA fighter Randy Couture will reprise his role as arsonist Jason Dunclair (now billed as Jason Sinclair) in episode 2, "Lehu a Lehu (Ashes to Ashes)."
McGarrett (Alex O'Loughlin) and Five-0 captured the homicidal firebug last year, but there will be at least one person who is not pleased the murderer is now behind bars.
"Five-0 investigates when a bomb squad is attacked and the culprit threatens to detonate additional hidden explosive devices unless arsonist Jason Sinclair is released from prison," CBS teased.
As Oahu prepares for a potential bombing, the members of the taskforce will have to deal with a host of new personal issues. Following Catherine's (Michelle Borth) returns and Adam's (Ian Anthony Dale) premiere torture at the hands of Gabriel Waincroft (Christopher Sean), Kono and Steve will have some important choices to make.
"After Adam returns from the hospital, Kono realizes that they are being watched, and McGarrett prepares to take his relationship with Catharine to the next level," CBS announced.
Hawaii Five-0 will return to CBS on Sept. 25 at 9 p.m. ET. "Lehu a Lehu" will air one week later on Oct. 2.
Click the video below to see a preview for the season 6 premiere.
