I Did It! A Hardboiled Detective Yarn

What's the best part of a hardboiled detective yarm? Is it the drunk detective rooting around for the solution? Is it the relentless mood of impending doom? Or could it be the confession? The confession is the such a cool part of a hardboiled detective yearn. And this novel has person after person coming into the police station to confess to the same crime.  What's wrong here?  Not every one who says they killed the rich man could actually kill him? What is in the air? What is in the mind? Could this be more than a hardboiled detective novel?  Could this be a sign of something worse? We confess, this yarn is hardboiled and unexpected.