Revealing mistake: When Jared is first reading the field guide, in flashback, there is a shot of Mulgarath in crow form trying to take the book from Arthur Spiderwick. Later in the movie, when Jared is about to burn the book, the same shot of Mulgarath is used again.
The Spiderwick Chronicles (2008)
1 revealing mistake
Directed by: Mark Waters
Starring: David Strathairn, Freddie Highmore, Mary-Louise Parker, Sarah Bolger
Continuity mistake: When Jared and Mallory are running through the tunnels, Mallory's eyeglass switches to the left eye in one shot.
More questions & answers from The Spiderwick Chronicles
Chosen answer: The book was full of the secrets of the hidden world. If Mulgrath had it, he could destory all the other creatures.