Hey! I have a very vague idea for a story. Basically, it is a group of people - who don't know each other - that are all on a cruise to New Zealand from Australia. They are mixed in throughout the whole crowd of the ship and aren't together. One of them falls overboard. Later on, another is unfortunately dies. These two people both have something in common. One of the group is an officer in the Police. As more of the group begin to mysteriously die, he becomes more suspicious. Eventually he finds some link between them all and realises that he is the next victim. He has to find out who the murderer is and survive for the remainder of the story - in which he does. I need help! 1/ Why are the group related 2/ Why does the killer seek to kill them. 3/ How does the MC (The Police Officer) find out all of this? Please help! Thanks!!