Mafia fmc and FBI Agent book rec

Looking for a recommendation on a book with a badass FMC who’s in the Mafia. Like specifically someone who is calling shots and an MMC FBI agent who is tasked with taking her down.

Also, if there aren’t any book recs writers in this subreddit please create something to this effect!

All levels of spice welcome, I have no triggers but please no reverse harem or why choose.