Kate Verney left her home in London at Christmas time to travel to Buenos Aires to meet her first grandchild! On the voyage she makes friends with Lindy and Rex Barron, two young adults who lost their mother and are on their way to live with their father in Lisbon. Murder and mystery is in the air when William Barron disappears and doesn’t show up to meet his children when the ship arrives in Lisbon. Kate realises that she can’t leave Lindy and Rex with no one to turn to, so she chooses to stay and stumbles upon a murder plot.