Skeleton Crew Showdown is a book in the Capstone series as a part of the Scooby-Doo! Beginner Mysteries line.
Summary[]
All aboard! The Mystery Inc. gang is ready for a summer vacation at sea. But the pirate ship is haunted by Captain Angus Grimm and his skeleton crew! Between sword fights and cannon ball wars, Scooby-Doo and his friends must work hard to solve this mystery and save their lives.