Breach is the seventeenth episode of NCIS: Hawaii Season 1 as well as the 17th episode of the entire NCIS: Hawaii series.
When a ransomware attempt causes a dam to malfunction, Ernie and a team of hackers are tasked to find the culprit quickly, before all power and water is cut off on the island as Lucy and Whistler work together, giving Whistler a chance to apologize to Lucy and mend their relationship.
|Jane Tennant||Vanessa Lachey||Special Agent Assigned to NCIS Pearl Team.|
|Jesse Boone||Noah Mills||Senior Agent for the NCIS Pearl Team.|
|Lucy Tara||Yasmine Al-Bustami||Junior Agent for the NCIS Pearl Team.|
|Ernie Malik||Jason Antoon||Computer specialist for the NCIS Pearl Team.|
|Kate Whistler||Tori Anderson||Former DIA Officer who becomes a new FBI Special Agent.|
|Alex Tennant||Kian Talan||Jane's older son.|
|Kai Holman||Alex Tarrant||Special Agent for the NCIS Pearl Team.|
|Thomas Priestley||Napoleon Tavale|
|Bryce McAffrey||Nicholas Koenig|
|Hank Braddock||Maury Sterling||RDET Team Leader|
|Alan Mateo||Alex Quijano|
|Rodney Shine||Rafael Cebrian|
|Kevin Rooker||Brad Carter|
|P. James||Scott M. Schewe||HPD Sergeant. Uncredited role.|