The Boss Was Actually an Undercover Cop

The Heroine Goes Undercover and Is Loved by a Drug Lord, but She Never Stops Loving Her Country

Novels With a Male Lead Who's a Narcotics Officer, HE!!!

Looking for Stories About a Mafia Heiress and an Undercover Cop

The Male Lead Spends Three Years Undercover, and the Female Lead Develops a Psychological Disorder

The male lead spent three years undercover, and the female lead developed a psychological disorder. They knew each other as children. She loves money and handsome men.

Any Good Crime Investigation Novels with Strong Logic and Great Writing?

Any Stories About Undercover Agents Returning Home? I'm Completely Out of Books, Please Help!

Anything good is fine, even if it’s not this type. I’m out of books to read.

The Female Lead Is an Undercover Agent, and the Male Lead Is Either a Gangster or a Drug Lord's Son. I Forgot

I saw this while scrolling before: The female lead has been undercover for seven years, and I think she's seven months pregnant. The male lead discovers she's an undercover agent, locks her in a basement, and forces her to miscarry. He personally takes the aborted baby away. Five years later, a child enters the basement... That's roughly what happens.

Novels About Undercover Narcotics Officers

Love After Marriage, With a Special Police Officer Male Lead

Any No-CP Stories With a Male Lead Who’s a SWAT Officer?

Novels with a Kind, Bad-Boy-Charming Male Lead Who’s an Undercover Agent