Nobody's There (Electronic book text)

A game of private detective turns deadly for an unlikely sleuth combo.
How did Abbie Thompson end up a sidekick to Edna Merkel, Senior Citizen Pseudo-Sleuth? It all started when Abbie was so furious at her father for breaking up their family that she acted without thinking and was arrested for malicious mischief. The judge decided to give Abbie a chance at a clean record and arranged for her to volunteer in a program in which teens are matched with the elderly.
Abbie's "friend," Mrs. Merkel, is a cranky, difficult woman who's a member of the Buckler's Bloodhounds. The Bloodhounds provide the police with information about scams or frauds in the community. But Edna Merkel is too active a member, and after she brags that she's on to something big, she's attacked and ends up hospitalized. Suddenly the private investigator game is real and, with the help of Mrs. Merkel's indecipherable notebook, only Abbie can figure out who did it. But will Abbie get to the assailant before the assailant gets to her?