Kaspar the cat first came to the Savoy Hotel in a basket – Johnny Trott knows, because he was the one who carried him in. Johnny was a bell-boy, you see, and he carried all of Countess Kandinsky's things to her room.

But Johnny didn't expect to end up with Kaspar on his hands forever, and nor did he count on making friends with Lizziebeth, a spirited American heiress. Pretty soon, events are set in motion that will take Johnny – and Kaspar – all around the world, surviving theft, shipwreck and rooftop rescues along the way. Because everything changes with a cat like Kaspar around. After all, he's Prince Kaspar Kandinsky, Prince of Cats, a Muscovite, a Londoner and a New Yorker, and as far as anyone knows, the only cat to survive the sinking of the Titanic…