A friend has asked the Mystery Inc. gang to investigate the old zoo full of ex-circus animals that he just bought, because it seems to be haunted--and soon the gang finds themselves pursued by a couple of "vampires."

A mischievous young vampire and penguin trade places for a day at the zoo.

A hilarious new book about Count Alucard, the vegetarian Vampire, told in diary fashion. . . . Count Alucard and his friends, Skopka the wolf and Ludwig the parrot, are blown off course after their daring escape in the zoo owner; s new yacht! They find themselves marooned on a desert island. Rather than trying to move on though, the three friends kick back and enjoy the life of laziness.

The Liberty Dog Show is being haunted by two monster mutts with glowing red eyes, and the Mystery Inc. gang are called in to investigate--but the gang suspects that these ghost dogs are too well trained to be real ghosts.

Fred's friend invites the Mystery Inc. gang on a "vacation" on the old pirate ship he just bought, but there seems to be another crew on board--a crew of skeleton pirates who intend to take their ship back.