23rd Midnight is one of the Women’s Murder Club (novel series).

Quite good.

Set in San Francisco, the novels follow a group of women from different professions relating to investigating crime as they work together to solve murders. 

Detective Lindsay Boxer put serial killer Evan Burke in jail. 
 
Reporter Cindy Thomas wrote a book that put him on the bestseller list.
 
An obsessed maniac has turned Burke’s true-crime story into a playbook. And is embellishing it with gruesome touches all his own. 
 
Now Lindsay’s tracking an elusive suspect, and the entire Murder Club is facing destruction.