Tale of the Cutter's Treasure, The (Are You Afraid of the Dark? #2) by David Seidman

Kidnapped!

Rush Keegan is a perfectly normal kid with a totally annoying younger brother named Max.

So what could he possibly have to do with Jonas Cutter--a mysterious and deadly pirate whose spectacular treasure was paid for with the lives of a hundred innocent sailors?

Plenty. Rush is about to embark on a dangerous quest to rescue his little brother. With the help of a family ghost and a doctor named Vink, Rush must confront the bloodthirsty pirate Cutter--who has been dead for over two hundred years!