Books in Nightmare Room, 2 series

You hold in your hand the key to a shadow world of shivers and screams. Take a step away from the safe, comfortable world you know. Unlock the door to terror. There's always room for one more in...The Nightmare Room.Mr. Moon is throwing a Halloween party, and Tristan and his best friend Rosa have been invited. How lame! Tristan thinks. He'd rather be trick-or-treating than hanging out with his teacher!But Mr. Moon's party is far from lame...because he's got a couple of werewolves on the guest list!Can Tristan escape the party? Or will he find himself trapped by a werewolf in The Nightmare Room?

You hold in you hand the key to a shadow world of shivers and screams. Take a step away from the safe, comfortable world you know. Unlock the door to terror. There's always room for one more in...The Nightmare Room. Danielle Warner was only pretending to hypnotize her brother Peter. So why is Peter acting so strange...so" Terrifying?" Doesn't Peter realize it was all a joke? Danielle and her brother are about to learn a frightening lessons: It's not a good idea to kid around--in The Nightmare Room. What will you find in "The Nightmare Room" next time? Find out in book 2: " Locker 13."