Billy and Sheena always expect adventure when they join their uncle, Dr. Deep, aboard his hi-tech boat. What they don’t expect is a treasure hunt leading to a 200-year-old sea captain… who refuses to stay dead!Just when they think the tide is turning, Billy and Sheena accidentally drive into a dangerous mystery. A chilling surprise awaits them in Horrorland, the theme park where their worst nightmare is about to come to life.

All Editions

Paperback, 21st Edition

ISBN13: 9780439918701

SCHOLASTIC INC, 2008

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