Goosebumps: Monsters at Midnight #2

Trapped in HorrorLand, sisters Mia and Ginny have no hope of escape... that is until a little Horror named Irk mentions the gate on the other side of the Scream-Park! Only problem is the never-ending nightmares that stand in their way! And did someone say something about a dummy? Oh, sorry! I didn't mean- AAAAAGGHH!