Try to crack the cases along with him--the answer to all the mysteries are found in the back!

    Life at home isn't great either, since her father bosses her and her mother around. Then along comes Ms. Finney, an English teacher who'll try anything in the classroom and actually treats kids like human beings. Now that she's found a teacher who sees Marcy as more than a name on an attendance sheet, Marcy realizes her life could mean something. When Ms. Finney is suspended, Marcy knows she's got to take a stand. But is this new independence worth the price she'll pay at school and at home?--back cover

    But when his world suddenly interlocks with an eccentric, bookish girl and a bitter old man who runs a toy booth in the station, Hugo's undercover life, and his most precious secret, are put in jeopardy. A cryptic drawing, a treasured notebook, a stolen key, a mechanical man, and a hidden message from Hugo's dead father form the backbone of this intricate, tender, and spellbinding mystery.