Something scary is happening in GOOSEBUMPS HORRORLAND, the all-new, all-terrifying series by R. L. Stine. Just how scary? You'll never know unless you crack open this classic prequel! <p>In DEEP TROUBLE, find out why Billy Deep and his sister, Sheena, are afraid of dark lagoons, coral reefs, and anything that appears to be half-human, half-fish! <p></p></p></p>