In this book, the fourth of The Two Graces series, we see Grace's and Molly's friendship being well and truly put to the test. But with a little help from Pop, everything works out in the end. Leo comes to stay again and this time he is going to make the move for good. Grace can hardly believe her luck as the modern day Fearless Four are now a permanent item. Good old Toby Brown arranged for Pop, Grace and Leo to visit the engine sheds where they keep the Prince of Iceland. They enjoyed a picnic lunch in one of the old carriages during this trip and Pop told them the long awaited story of the village cricket match from many years ago. As well as having a much unexpected ending, Grace and Leo were, once again, able to witness the events first hand.