R.L. Stine,Goosebumps Horrorland Series Books 1 - 18 Collection Box Set
(11) Escape From Horrorland. 17) Wizard of Ooze. 18) Slappy New Year! Titles in this set 16) Weirdo Halloween. 13) When the Ghost Dog Howls. 15) Heads, You Lose. 5) Dr Maniac VS Robby Schwartz.