The Smiling Ghost

A vampire attacks a horror author on the street and then invites him to a nearby club as a gesture of gratitude, which turns out to be a meeting place for assorted creatures of the night. The vampire then regales him with three stories, each interspersed with musical performances at the club.

When ten-year-old Lewis is suddenly orphaned, he is sent to live with his Uncle Jonathan in a creaky (and creepy) old mansion with a mysterious ticking noise that emanates from the walls. Upon discovering that his uncle is a warlock, Lewis begins learning magic, but when he rebelliously resurrects an evil warlock he must find the secret of the house and save the world from destruction.

Society sleuths Nick and Nora Charles investigate a murder in a jazz club.

Mystery Inc. withdraws from solving crimes after botching a case. When Vincent Van Ghoul contacts the gang about an unfinished investigation from Daphne, Shaggy and Scooby's past, the gang springs into action to finish the job that involves catching the 13th Ghost that escaped from the Chest of Demons and is still at large.