The Spiderwick Chronicles. Poster of the 2008 movie and cover of the 2003 book
VS3
The Spiderwick Chronicles
Tony DiTerlizzi, Holly Black, 2003
movie vs book
Mark Waters, 2008

In 1928, Arthur Spiderwick writes a Field guide about the many faeries he has encountered. After finishing the Book, he hides it away for fear of Mulgarath, a shapeshifting ogre who plans to use the Book’s secrets for evil. Eighty years later, recently divorced Helen Grace inherits and moves into the abandoned Spiderwick estate with her children, daughter Mallory and twin sons Jared and Simon.