Next Town Over: A steampunk fantasy Western. With many mysteries. (And the sympathetic characters are only supporting ones thus far -- but the two leads do have a certain flare.)
Wake the Sleepers: A mysterious knight, under a curse, a bright-eyed and bubbly urchin girl; an assassin in it for the money. Strange magics. And mysteries.
Earthbound: A boy in the modern world whose mysterious past seems to be catching up to him. (Fantasy.)
I seem to be mysterious. . . .