Mr. Pin, the beloved penguin detective from the South Pole, helps stamp out crime in the windy city of Chicago. With his young assistant Maggie at his side, he follows the chocolate trails in exciting mysteries that baffle the entire police department. Water is leaking through the cracked basement floor of Sally's Diner where Mr. Pin has his office. Suddenly a fish pops through the hole in the floor. Astonished, Mr. Pin drops the fish in a jar of water and hurries upstairs to show everyone his new pet. But the diner is in a state of confusion-the Chicago River is pouring into buildings all over the city! Can Mr. Pin stop the flood and save his friends? In A Fish Named Yum, Mr. Pin provides gentle lessons about friendship as he munches his way through the creamy candy clues in two entertaining cases. Youngsters will laugh out loud as John McDonough narrates the humorous adventures of the penguin and his new pet. Beginning readers can enjoy more Mr. Pin stories in The Mysterious Cases of Mr. Pin, Mr. Pin: The Chocolate Files), and The Spy Who Came North from the Pole.