Footage shows crowds partying on a luxury cruise liner just hours before a grandfather was "killed on a stag do" aboard the ship - and passengers say they were never told of the death.<br /><br />James Messham, from West Sussex, was reported dead two-and-a-half hours after the MSC Virtuosa departed from Southampton on Saturday, May 3. <br /><br />A 56-year-old man from Richmond, London, has been arrested on suspicion of manslaughter, according to Hampshire and Isle of Wight Constabulary. <br /><br />Shocked tourists on the cruise have described the hours before and after his death.