Hawaii Five-0 (2010)

S8E25 Waiho wale kahiko (Ancients Exposed)

In the episode "Waiho wale kahiko (Ancients Exposed)," McGarrett and the Five-0 team uncover a covert Russian espionage operation operating openly in Oahu, triggered by the appearance of a Russian nuclear attack submarine off Waikiki's shores. Meanwhile, Tani grapples with unsettling revelations she uncovers at Adam's residence, adding personal turmoil to the unfolding investigation.