Forbidden Visions - The Dream World Chronicles, #5

Alex is sure the key to saving her loved ones-and the dream world-is the sleep thorn. But in order to get it back, she must earn her enemy's trust. In hopes of stealing the elusive sleep thorn, Alex moves into Morpheus's lair, where she discovers all the horrific secrets behind the missing dream world hunters. She schemes to trick Morpheus into giving her the thorn, but when he realizes her plan, Alex is forced to run for her life.
With the help of her friends, and an unlikely ally, she might just be able to escape danger long enough to come up with a new plan. But the stakes are higher than ever. If she fails, it may just mean the end of the dream world. Forever.