When the gang stays with Fred's uncle, they attempt to unmask the ghost of a lighthouse keeper who is haunting an old lighthouse and causing terror to ships out on the water. In addition one of the ships the keeper sank has returned as a ghost ship with a ghost crew.
- Casey Kasem voices Shaggy Rogers
- Frank Welker voices Fred Jones and Scooby-Doo
- Grey Delisle voices Daphne Blake and Verona Dimpsey
- Mindy Cohn voices Velma Dinkley
- Pat Fraley voices Uncle Carl
- Dee Bradley Baker voices Crusty McPete and Lighthouse Keeper