Tarrant plays the series regular role of charming local Kai, a new addition to Tennant’s team who boasts the special ability to blend into the island while investigating high-stakes crimes. Kai recently returned home to care for his ailing father and to reconcile with his complicated past. A far cry from his carefree years catching waves and serenading a wahine with his ‘uke, but that’s all in a day’s work for an agent of his caliber.
Gjokaj’s Joe Milius is a high-ranking Navy Captain and commander of Pacific Fleet who is protecting the honor of a dead officer who was piloting a top-secret experimental aircraft that crashed into a cliff. Milius, who maintains the collision was an accident, clashes with Tennant as she takes control of the investigation though he can’t help but respect her ability as a leader.