Book excerpt: SO HERE I am spending spring break in California with my best friend, Junie. Our chaperone is a teenager, like us. And soon I’ll get to hang out with the coolest, cutest boy in the Southwest. Life is so good. Except I should tell you that I’m not actually in San Diego for fun. Even though I’m a normal person who likes normal stuff—friends, clothes, the mall—I’m supposed to be solving a mystery, one that involves a rhino heist and a crazy chef. And I have to do it because my supercop mom is counting on me. Did I mention she’s a ghost? A ghost who can make contact with only one person. Me, Sherry Holmes Baldwin. My mom is flunking out of the Academy of Spirits, and if I don’t help her, she’ll be banished to an afterlife for ghost failures. But . . . I so don’t do mysteries.