Sherry's mother was a cop and now she has returned as a ghost and needs Sherry's help. Turns out that on the other side mom is now working in the afterlife Academy of Spirits and needs to figure out who is killing the rhinos at the zoo. Sherry is headed to San Diego for a little visit with her great-aunt and her cousin. Now she has to help her mother crack the case. One part detective story and one part zaniness. 280 pages Ages 10-13