Hawaii Five-0 follows a puzzling murder case.
Last season, in order to stop a meth epidemic on the island, McGarrett and Danny went undercover as drug pilots, but when McGarrett was seriously wounded, Danny was forced to break their cover in order to save his partner’s life and land their airplane on the beach.
As McGarrett was wheeled into the operating room, Danny offered to donate half of his liver to his partner and best friend, thus saving his life.
In Hawaii Five-0's season premiere, McGarrett refuses to listen to Danny’s pleas to take it easy while recovering from surgery after the body of a serial killer is left in the headquarters with an ivory chess piece in his mouth.
When a second serial killer is found dead with another chess piece, Five-0 goes on the hunt for the vigilante as fear grows that it’s not safe to travel to Hawaii. Also, McGarrett finds comfort in talking to someone with a very special connection to the team.
Rosalind Chao recurs as Governor Keiko Mahoe, and Claire Forlani recurs as Alicia Brown, a retired criminal profiler.
See what happens during the season premiere airing Friday, Sept. 23 at 9/8c.
Watch Hawaii Five-0 on CBS.