The Bone Carousel - The Lost Ones Trilogy, #1

A boy born with faerie sight. A journey into the world of the dead. A place darker than anything he could have imagined and filled with creatures that make the fey above ground seem like things from children's tales. This is the story of Makin Riley, a curious boy, whose obsession with faeries and monsters leads him to a cemetery that holds the doorway to the world of the dead. After being spotted by one of the reapers that travels between the worlds, the creature takes Makin's little brother's spirit, leaving him for dead.
Now, Makin and his friends, Frankie and Marcus, must journey into the darkness of the dead world in order to save his brother's spirit while there's still a chance of bringing him back to life. Book 1 of The Lost Ones Trilogy