VIDEO: Sneak Peek - Fourth Season Premiere of CBS's HAWAII FIVE-O

On the fourth seaon premiere of CBS's HAWAII FIVE-0 titled 'Aloha ke kahi I ke kahi,' after McGarrett and Wo Fat narrowly escape from maximum security, gunmen storm Five-0 headquarters, compromising Kono and Adam's secret location in Hong Kong and forcing McGarrett to break the law and turn on his own in order to find a kidnapped Catherine.

The episode airs HAWAII FIVE-0, on a new night, Friday, Sept. 27 (9:00-10:00 PM, ET/PT) on the CBS Television Network. Get a sneak peek below!

Chi McBride guest stars as SWAT Captain Lou Grover, a character that first appeared in an episode of the original "Hawaii Five-0" series. Henry Ian Cusick guest stars as a member of a terrorist organization.