As if coping with difficult passengers were not enough, one of them disappears in mysterious circumstances. Suddenly a full-scale investigation is in swing headed by the autocratic Peter Montgomery-Jones who doesn’t make Fiona’s job any easier. The reason quickly becomes clear. The missing man was undercover on the trail of diamond smugglers. When his body turns up Fiona must face the fact that she has a murder in her party.The body count quickly mounts up when they move on to Amsterdam and Fiona needs to work out which of her passengers is the killer before she becomes his next victim.