Torchwood Ghost Train

It's not easy being Rhys Williams. You're married to the sexiest woman in Torchwood. She saves the world for a living, you move lorries round in a timely fashion. Suddenly, you've got a mystery of your own. Oh, it starts off being about missing fridges. But it leads to a midnight train pulling into an abandoned platform at Cardiff Station. What is the mysterious cargo that Rhys is unloading from the train? Where's it going? And what can be behind it? Rhys Williams is going to get to the bot...