S.m.a.r.t.s. and the 3-d Danger

Publisher Marketing: Strange things are happening at the Hubble Middle School. Someone's setting off the fire alarm, breaking into the school at night, and secretly using the school's brand-new 3-D printer. But worst of all, S. M. A. R. T. S. member Caleb is being blamed! Contributor Bio:  Metz, Melinda Melinda Metz is the author of more than sixty books for teens and kids, including the YA series Roswell High (basis of the TV show Roswell) and Echoes. Her middle-grade mystery Wright and Wong: Case of the Nana-Napper (co-authored by the fabulous Laura J. Burns) was a juvenile Edgar finalist. Melinda lives in Concord, North Carolina, with her dog, Scully, a pen-eater just like the dog who came before her. Contributor Bio:  McKenzie, Heath Heath McKenzie is a bestselling illustrator from Melbourne, Australia, who owned a cat when he was very young. Now he has a small dog that behaves an awful lot like a cat and even fancies fish for dinner.