The book behind the Netflix series - a funny and gruesome fantasy adventure for fans of Pan's Labyrinth.In San Bernardino, California, children are going missing.Now a Netflix original series, created by Dreamworks Animation. The book behind the Netflix series - a funny and gruesome fantasy adventure for fans of Pan's Labyrinth. In San Bernardino, California, children are going missing. The townspeople don't believe the rumours of trolls, but fifteen-year-old Jim Jnr knows that they're a real threat. At night, is anyone safe? Now a Netflix original series, created by Dreamworks Animation.