Figment (Insanity Book 2)

After her encounter with the Cheshire Cat, Alice Wonder can hardly tell reality from imagination. But when kids have their head chopped off and stuffed in watermelons all over the city, it's clear that another Wonderland Monster has arrived, possibly scarier than the Cheshire. Alice, along with Professor Pillar, have to solve the killer's puzzles before a horrible event threatens the death of millions. Then Jack Diamonds appears again. This time, Alice must know who he really is.