And all new original mystery star in Adrian Monk the investigator who always knows when something's out of place. Of all the things that make Adrian monkey and easy change rinks high on the list. So when Natalie completes her PI license and technically become smokes boss it's not easy for him to accept. Nor can he accepting a business seminar at sea without him even if it means spending a week with her on a cruise ship. Between choppy Waters and obnoxious kids monk finds himself in a perfect storm of anxiety. Luckily Mariah the cruise director is always able to smooth things over until someone pulls the Man Overboard alarm the ship drops anchor in the crew fishes Mariah's dead body out of the water. Fine and alcohol and Mariah system the ships doctor declares the death of an accident but monk isn't convinced. He knows Mariah and the captain we're having an affair. Could someone have pushed her over about bored? When the captain hires Monk and Natalie to look into the mysterious rashes of vandalism on board monk steers the investigation toward murder