The Double Life of Cassiel Roadnight

I really liked this mystery, and it seems that Jenny Valentine the author borrowed heavily from a real life imposter.  Cassiel Roadnight is missing and one day someone mistakes the un-named narrator as Mr. Roadnight.  The mystery boy goes along with the idea and poses as the missing teen but keeps thinking he will be caught.  He meets his 'family' and starts to put together the life of the kid he is replacing.  It is suspenseful and creative, -a page turner.