"The Case of the Saucer Impostor!" O.K. Quack's coin-shaped spaceship can shrink to the size of a real coin-and since Scrooge McDuck spent it and lost it, he's forced to help Humphrey Gokart, ace detective, find it! It's the stuff dreams are made of! Meet Humphrey Gokart, Disney's infamous duck detective-beloved in comics around the world, with master artist Giorgi Cavazzano at his service!