Today you're going to be late for work because there's going to be another ferry murder. The lights will go out by the interior snack bar, and when they come back on the snack bar clerk will be dead. Written in his blood will be the letters P.F.
"Nobody leaves the ferry until we know who did it," the captain will announce. "Sorry, transit authority rules."
For the next four hours you'll float still in the middle of the river as a retired private detective, who just happened to be on board, engages you all in a game of cat and mouse, trying to suss out from each of your whether you had the motive, the weaponry, the appropriate temperature of blood in your veins. Though you were all told to stay together, you'll one by one wander off into other parts of the ferry where you'll be found murdered too.
Late tonight, after all of the questions have been asked and all of the brandy has been drunk, all but one of you will be dead. The one who is still alive is named Paul Frank. That's right, the Paul Frank. The one who puts the monkeys on his clothes. He'll steer the boat into dock, and he'll step onto shore to accept his new fame as the fashion designer who killed more people on water than any other fashion designer in history (behind Sergio Valente, Gloria Vanderbilt, and whoever was the guy who dreamed up those Ocean Pacific tee shirts because that guy killed a lot of people).
Happy Ferry Murder Day!