The day Adam Dunne's girlfriend, Sarah, fails to return from business trip to Barcelona, his life begins to fall apart. Days later, the arrival of her passport and a note that reads, “I'm sorry – S,” sets off real alarm bells. Adam is puzzled when he connects Sarah to a cruise ship called The Celebrate, and to a woman who disappeared in eerily similar circumstances. Adam must try to outwit a predator who seems to have found the perfect hunting ground…

The day Adam Dunne's girlfriend, Sarah, fails to return from business trip to Barcelona, his life begins to fall apart. Days later, the arrival of her passport and a note that reads, “I'm sorry – S,” sets off real alarm bells. Adam is puzzled when he connects Sarah to a cruise ship called The Celebrate, and to a woman who disappeared in eerily similar circumstances. Adam must try to outwit a predator who seems to have found the perfect hunting ground…