Books

Fourth chronological book in series

 * Battle of the Labyrinth - Percy Jackson series
 * Battles of the Clans - Warriors Field Guide series
 * Bec - The Demonata
 * Blood Promise - Vampire Academy
 * Breaking Dawn - Twilight
 * Brothers to the Death - Saga of Larten Crepsley
 * Children of the Mind - Ender's Game series
 * City in the Clouds - Secrets of Droon
 * City of Fallen Angels - The Mortal Instruments
 * Crookedstar's Promise - Warriors Super Edition series
 * Dead to the World - The Southern Vampire Mysteries/The Sookie Stackhouse Novels/True Blood Series
 * Drums of Autumn - Outlander
 * Eclipse - Warriors Power of Three series
 * Extras - Uglies
 * Harry Potter and the Goblet of Fire - Harry Potter
 * Here Comes Noddy Again! - Noddy
 * Inheritance - Inheritance Cycle
 * Journey to Chandara - Dinotopia series
 * Lost City - Dinotopia series (short novels)
 * The Miserable Mill - A Series of Unfortunate Events
 * Mr. Nosey - Mr. Men
 * The Mystery at Lilac Inn - Nancy Drew Mystery Stories
 * Prince Caspian - The Chronicles of Narnia
 * Power Play - Sweet Valley High
 * Rising Storm - Warriors Original series
 * Shadow Puppets - Ender's Shadow/Bean's Quartet series
 * Sign of the Moon - Warriors Omen of the Stars series
 * Starlight - Warriors New Prophecy series
 * Untamed - House of Night
 * Vampire Mountain - Saga of Darren Shan/Cirque du Freak

Undecided

 * The Return of the King - The Lord of the Rings
 * It is the fourth book if you count The Hobbit.