Faebound (The Otherworld Series, #10)

Aiden Elam has always been different from the other kids he knows.  The adults say he has autism, but Aiden isn’t so sure.  He can understand everyone just fine, he just can’t get the words out to tell them.  Now, if he could only get past the strange feeling that keeps him trapped inside his own mind, then maybe he could tell his parents about the weird things he sees.  Or perhaps he could even tell his sister, Meggy, for he knows she can hear and see the strange things, too.