Common Sense Note
Parents need to know that this aptly titled series is inspired by popular Grimm's fairy tales, but you shouldn't expect many happy endings when it comes to the characters' lives. There is nothing light about the content, from human faces that morph into monsters' to the fright, suspense, and bloody violence that's an integral part of this police/supernatural drama, so it's a definite no-go for kids. There's also some light language ("hell," "ass," "pissy," and the like), and some of the stories touch on drug use, both for medicinal purposes and as a result of addiction.
Fantasy violence, with some blood (including glimpses of parts of dismembered bodies and characters biting and scratching each other) and sudden, scary surprises. Frequent fights and weapon use (including guns, knives, and more). Death and murder are common. Children can be in peril.
Occasional language like "hell," "ass," and "pissy."
Although the world is revealed to be full of dangerous people -- and creatures -- the main character is tasked with making it safer. There's also some cooperation between species, which shows the better side of both humanity and the mythological creatures. The stories demonstrate how literature and folk tales can be interpreted differently by different people.
Mention of common brands like iPod, iPhone, etc.
Drugs / Tobacco /
A character mentions that he takes a regimen of prescription drugs to control his animal instincts. In one story, creatures get high by inhaling the vapors of a drug called "jay," and they turn to violence, theft, and murder to feed their addiction.