Certain dark things is a different type of vampire novel. This book takes place in Mexico City and breaks down vampires into different factions. The first one is the Aztec vampires. These are some of the oldest and our main heroine Atyl is just such a vampire. However in this story it’s the vampires that run the drug cartels. Her family has been doing this for centuries and now there are consequences. After the death of her family Atyl is on the run. While vampires are not allowed in Mexico City that is where she is hoping to find passage out of the country. Instead what she finds is Domingo, a street boy who is willing to do almost anything for her. He will be her snack, he will walk her dangerous dog, he will help her live and find a newlife. But this is no easy task. You see the other forms of vampires Necros are after a Atyl. Necros vampires aren’t only mean and nasty they are violent and they will get their revenge. But maybe just maybe with the help of Rever, Atyl and Domingo just might find safety and avoid attacks by the Necros Nick and others that are out to get them. Overall this was a very interesting take on a vampire novel. The world building is well done. It brings to life Mexico City and  it makes it feel like someplace with a past present and future. It also makes you feel for the characters with the way the author describes and gives back stories to her vampires. Whether it’s the biologically altered protective dogs or the feathers that sprout with no notice this is a book that’s going to keep the reader entertained and engaged in the story. Is it the best vampire novel ever, No, however it is one that’ll feed the need for somebody who’s looking for something new or a new take on vampire lore.