Henry Hunter and the Cursed Pirates

"Dare you open the Henry Hunter files? Henry Hunter's friend Charlie is desperate for help: his parents have gone missing in the Caribbean Ocean, and no one will believe him that something sinister is afoot. It's up to super-sleuth Henry and his friend Dolf to investigate, but their only leads are local legends about the Sword of Columbus and the feared pirate Blackbeard...Interest age 7+"