Shelly and her merfriends are excited to sleep in the museum until they start to wonder if it's haunted in this spooky Mermaid Tales adventure. It's almost Shelly's birthday She can't wait to have her friends over and eat her grandfather's homemade pizza. But when Pearl gets involved in the party planning, the ideas get out of hand. Soon Shelly's small sleepover turns into an overnight extravaganza at the People Museum, complete with...