Hawaii Five-0: Season 8, Episode 4

8 - 4: E Uhi Wale No 'A'ole E Nalo, He Imu Puhi (No Matter How Much One Covers a Steaming Imu, the Smoke Will Rise)

The lives of Five-0's informants are in danger when the HPD system is hacked and one ends up dead, forcing McGarrett to enlist the help of hacker Aaron Wright, who he just imprisoned.