Donald Duck; Huey; Dewey; Louie; Uncle Scrooge; mayor of Duckburg; Daisy Duck; The Beagle Boys; various Duckburg police; three bakers; King Notraks of Toolong Sarong
Showing great deductive skills when it comes to solving mysteries and "who-dun-its" in books and on TV, Donald decides to become a private eye. His first case is to protect a valuable hypnotic opal from being swiped at an outdoor ceremony held to present the opal to a visiting king.
Mickey and Goofy investigate a number of incidents where thieves are using a rare daisy perfume to rob banks and jewellery stores. The perfume makes the victim uncontrollably generous and more than willing to give the wanted items freely to the robbers.