Sea Patrol (2007)

S04E01 Night of the Long Knives

Title: Night of the Long Knives Plot: The HMAS Hammersley crew stumbles upon a conspiracy aimed at eliminating a high-ranking US official. Kate grows suspicious of a new team member, a celebrated war veteran harboring a troubling past. Meanwhile, Mike hesitates to accept a promotion to Navcom, despite the opportunity it presents for him and Kate to explore their budding romance.