Set in a pet-store run by a clueless owner who absurdly mis-labels all the animals, this graphic novel for younger audiences tells the story of the local guinea pig who’s earned herself a reputation as a sleuth.  When the pet-store owner and the local hamster both get spooked by mysterious cold spots, and shadows on the wall, disappearing mice,  it seems the pet store must be haunted.  It falls to our reluctant P.I. to solve the mystery.  The characters and plot aren’t exactly strong, and it certainly helps if readers have already read the first book in the series, to help make sense of the second.  The first was well-liked enough by students to request more, but I’m pretty luke-warm to them myself — nothing bad to say about them, really, but nothing great, either.