(Depressed with the Heat of Kealwalua) While investigating Flippa’s friend’s murder, McGarrett and Grover uncover a deadly plan by an extremist group on the Island. Also, Grover has an emotional reaction to the case.

Allyson Blair, Cory Blevins, Graham Beckel, Guy Wellman, Hale Mawae, Maddie Nichols, Michael Matthews, Monique Blanchard, Nicole Hunt, Riley Baron, Shawn Mokuahi Garnett, Tiffany Rose Brown, Tonja Kahlens, Walter Eccles II