Written Off (Mysterious Detective #1) by E.J. Copperman (2018)

Mass Market Paperback in Fine (FN) condition. Looks new and unread. 

Stranger than FictionRachel Goldman writes mysteries in which Duffy Madison, consultant to the county prosecutor’s office, helps find missing persons. She’s busy finishing up her next book when a man calls out of the blue asking for help on a missing-persons case. The caller’s name? Duffy Madison.Is this real or has she lost her mind? She doesn’t have much time to find out because a serial killer is on the loose, kidnapping and murdering mystery authors. And Rachel may just be the next target