A different approach for this kind of thing. Not a bad watch, but it might be useful to know beforehand that it's pretty slow moving at the outset. If you're looking for a fast-paced shoot 'em up, this ain't it. However, the slower parts are carried by beautiful coastline scenery as well as by the general atmosphere of the movie, which provide a calming backdrop for a rather laid back mystery about a marine botanist (Lochlann O'Mearian) researching undersea flora that may have medicinal benefits. He goes missing while on a dive, and his wife (Connie Nielsen) struggles with his absence, wondering, as we do, if there was foul play.
The story, and their relationship, is revealed in pieces, sometimes using flashbacks. Her scientist husband's work was controversial, and there are indications of corporate espionage. Adding to the intrigue, she begins to get insights, perhaps of a psychic nature(?) as to what may have happened.
You may have your own suspicions; one hunch I had early on turned out to be correct, but there are some genuine surprises toward the end, when it gets considerably more intense, although it never becomes what you would call a thriller. It's really more of a psychological drama, with just a hint of the supernatural or mystical.