A Matter of Possession — L. Phillips Carlson

Joe Shurjack's had a lousy week in St. Louis, and it's not just the weather. First, his flirtatious coworker Bea dies in a car accident. Next, his boss at the PI firm goes crazy and fires most of the staff, including Joe. And then his wife starts acting weird. What's a newly-licensed private investigator to do? Joe decides to strike out on his own, but soon finds himself chasing a stolen butterfly collection, one with a murderous twist. He's barely working on the case when Bea's ghost manifests -- and takes over his wife's body! She tells him someone was out to get her, that it was no mere accident. Haunted by his own insecurities, Joe struggles to solve the butterfly murder and uncover the well-hidden clues to Bea's demise. What he ultimately learns changes everything -- for his clients, his former coworkers, and for him.