Slippin' Into Darkness

Two sets of enemies; a Cape Cod gangster turned gunrunner and a Boston detective who put his nephew in prison, inadvertently wind up on a cruise ship together. But it's no ordinary cruise ship. Everything seems normal until the sun goes down and the entire crew transforms into ravenous vampires. Now, in order to survive and get off the ship, it's a situation where "enemies of my enemies are my friends," as everyone fights together for survival. The Poseidon Adventure meets Dusk to Dawn, and the term "free buffet" takes on a whole new horrifying meaning.