Ronan Boyle and the Bridge of Riddles (Ronan Boyle, Bk. 1)

Fourteen-year-old Ronan Boyle is the youngest and lowliest recruit to the secret Garda, an Irish police force that handles the misdeeds of numerous magical creatures. Ronan’s parents are in jail, but Ronan is convinced that they were framed by the wee people. So, despite his small size, poor eyesight, and social awkwardness, he’s determined to learn all he can in the Garda in order to prove his parents’ innocence. To show he’s got what it takes, he’ll have to confront a fiery leprechaun, a sinister harpy, and a whole world of monsters hidden in plain sight next to real-life Ireland.