The Homicide Squad Chief Has Gone Crazy: He Wants to Interrogate Himself

Criminal Investigations, Two Male Leads, and a Romance Plot

I'd like something like "The Puzzle: Chasing the Light". A series of standalone cases, with a fast-paced investigation. Two male leads, with a romantic storyline. I also like stories with secondary couples. Ideally, both leads should be strong. No weak crybabies, please.

Crime Investigation and Case-Solving Novels: I’ve Read All the Popular Ones. Looking for Hidden Gems

Looking for books similar to I Have Autism, So What If I Know a Little About Autopsies?

Real-Case Crime Solving and Criminal Investigations. No System, No Power Fantasy!!

A well-reasoned plot, no System, and no wish fulfillment.

A Gripping Suspense Novel with a Murderer Protagonist and No Romance

Any Mystery Novels Where the Protagonist Is Actually the Real Killer?

The protagonist takes part in the search for the killer, but nobody realizes it early on. No romance.