Dead Reckoning by Sandra K. Moore
Notes from the Captain's log - My destination: An island not marked on any map. My mission: To rescue my sister from her drug lord husband, come hell or high water.But first, I need to figure out which of the undercover agents aboard my ship - men sworn to protect Natalie and me - is a traitor.I'd been poisoned by exhaust fumes and nearly sucked into propeller blades - and these were no accidents. Unfortunately, the agent I took into my confidence - and into my bed - has been lying to me all along. Suddenly, telling the good guys from the bad is a lot harder. But I'm one mistress and commander no one wants to cross...- Captain Christina Hampton, "the Obsession".