finished reading

Book 4 of the series is much darker than the previous books.  There's a lot more action in this book than previous books.  After the major cliff hanger at the end of Book 3, I'll admit it took me a bit to figure out where this book was starting--and since it didn't have the hilarious chapter introductions, I knew it was going to have a different tone. I couldn't put it down, though! 

 From the publisher:

He's waiting for you...

Under a blanket of snow, surrounded by dark woods and a frozen sea, lies an ogre's castle. There lives a little princess, trapped in the maze of her own mind.
On a battlefield where the past meets the present stand a fairy godmother and a pirate, an old ice cream man and a knight in shining clean armor...
The clock is ticking fast, and to pierce the ogre's secrets and defeat him, Island Chaptal will have to fight to remember...and stay alive.

Can the Lions and the Roomba cats be stopped before it's too late?