This is a challenging, but ultimately rewarding, American horror movie. Jess, a struggling single mother, played by Hollywood's current scream queen Melissa George, gets invited on a boat cruise by a man named Greg, who has the hots for her. A group of six set sail on a yacht named Triangle, which gets capsized in a mysterious storm. A passing cruise liner, curiously a 1930's liner, and which Marie Celeste like is abandoned, provides the survivors with a refuge. The old liner has myriad corridors, like the secluded hotel in The Shining, and the group start to explore. One by one the survivors are shot dead by a hooded gunman, and only Jess manages to make a getaway. As she flees, she keeps having an overwhelming sense of déjà vu. She confronts the masked killer, and this is where the film turns into a gripping Groundhog Day tale of horror. It is full of twists and turns so you need to concentrate. Some will find this irksome, because the film is not linear in its story-telling, it goes off at tangents, but I found it highly inventive. It reminded me of a similar Spanish horror called TimeCrimes, which is equally clever and effective. You will ultimately discover why Jess finds herself trapped in her Groundhog Day nightmare on board the ship, it is linked to the violent death of her son in a car crash, but all is not revealed until the closing shots of the movie. This has all the flair and directorial gusto of the first Scream film, but without any attempt at irony or mockery of the genre. It takes itself deadly seriously, like The Shining, and holds you in a vice like grip for the 90 minutes running time. Melissa George excels in her role, and one can see why she has become a highly successful scream queen. This is a really good horror to add to your DVD collection. If you also buy the excellent TimeCrimes, and watch the two movies back to back, you'll be going on a 3 hour journey of engrossing and thought provoking horror.